/**
 * @summary     datatables
 * @description paginate, search and sort html tables
 * @version     1.9.4
 * @file        jquery.datatables.js
 * @author      allan jardine (www.sprymedia.co.uk)
 * @contact     www.sprymedia.co.uk/contact
 *
 * @copyright copyright 2008-2012 allan jardine, all rights reserved.
 *
 * this source file is free software, under either the gpl v2 license or a
 * bsd style license, available at:
 *   http://datatables.net/license_gpl2
 *   http://datatables.net/license_bsd
 * 
 * this source file is distributed in the hope that it will be useful, but 
 * without any warranty; without even the implied warranty of merchantability 
 * or fitness for a particular purpose. see the license files for details.
 * 
 * for details please refer to: http://www.datatables.net
 */

/*jslint evil: true, undef: true, browser: true */
/*globals $, jquery,define,_fnexternapifunc,_fninitialise,_fninitcomplete,_fnlanguagecompat,_fnaddcolumn,_fncolumnoptions,_fnadddata,_fncreatetr,_fngatherdata,_fnbuildhead,_fndrawhead,_fndraw,_fnredraw,_fnajaxupdate,_fnajaxparameters,_fnajaxupdatedraw,_fnserverparams,_fnaddoptionshtml,_fnfeaturehtmltable,_fnscrolldraw,_fnadjustcolumnsizing,_fnfeaturehtmlfilter,_fnfiltercomplete,_fnfiltercustom,_fnfiltercolumn,_fnfilter,_fnbuildsearcharray,_fnbuildsearchrow,_fnfiltercreatesearch,_fndatatosearch,_fnsort,_fnsortattachlistener,_fnsortingclasses,_fnfeaturehtmlpaginate,_fnpagechange,_fnfeaturehtmlinfo,_fnupdateinfo,_fnfeaturehtmllength,_fnfeaturehtmlprocessing,_fnprocessingdisplay,_fnvisibletocolumnindex,_fncolumnindextovisible,_fnnodetodataindex,_fnvisblecolumns,_fncalculateend,_fnconverttowidth,_fncalculatecolumnwidths,_fnscrollingwidthadjust,_fngetwidestnode,_fngetmaxlenstring,_fnstringtocss,_fndetecttype,_fnsettingsfromnode,_fngetdatamaster,_fngettrnodes,_fngettdnodes,_fnescaperegex,_fndeleteindex,_fnreorderindex,_fncolumnordering,_fnlog,_fncleartable,_fnsavestate,_fnloadstate,_fncreatecookie,_fnreadcookie,_fndetectheader,_fngetuniqueths,_fnscrollbarwidth,_fnapplytochildren,_fnmap,_fngetrowdata,_fngetcelldata,_fnsetcelldata,_fngetobjectdatafn,_fnsetobjectdatafn,_fnapplycolumndefs,_fnbindaction,_fncallbackreg,_fncallbackfire,_fnjsonstring,_fnrender,_fnnodetocolumnindex,_fninfomacros,_fnbrowserdetect,_fngetcolumns*/

(/** @lends <global> */function( window, document, undefined ) {

(function( factory ) {
	"use strict";

	// define as an amd module if possible
	if ( typeof define === 'function' && define.amd )
	{
		define( ['jquery'], factory );
	}
	/* define using browser globals otherwise
	 * prevent multiple instantiations if the script is loaded twice
	 */
	else if ( jquery && !jquery.fn.datatable )
	{
		factory( jquery );
	}
}
(/** @lends <global> */function( $ ) {
	"use strict";
	/** 
	 * datatables is a plug-in for the jquery javascript library. it is a 
	 * highly flexible tool, based upon the foundations of progressive 
	 * enhancement, which will add advanced interaction controls to any 
	 * html table. for a full list of features please refer to
	 * <a href="http://datatables.net">datatables.net</a>.
	 *
	 * note that the <i>datatable</i> object is not a global variable but is
	 * aliased to <i>jquery.fn.datatable</i> and <i>jquery.fn.datatable</i> through which 
	 * it may be  accessed.
	 *
	 *  @class
	 *  @param {object} [oinit={}] configuration object for datatables. options
	 *    are defined by {@link datatable.defaults}
	 *  @requires jquery 1.3+
	 * 
	 *  @example
	 *    // basic initialisation
	 *    $(document).ready( function {
	 *      $('#example').datatable();
	 *    } );
	 *  
	 *  @example
	 *    // initialisation with configuration options - in this case, disable
	 *    // pagination and sorting.
	 *    $(document).ready( function {
	 *      $('#example').datatable( {
	 *        "bpaginate": false,
	 *        "bsort": false 
	 *      } );
	 *    } );
	 */
	var datatable = function( oinit )
	{
		
		
		/**
		 * add a column to the list used for the table with default values
		 *  @param {object} osettings datatables settings object
		 *  @param {node} nth the th element for this column
		 *  @memberof datatable#oapi
		 */
		function _fnaddcolumn( osettings, nth )
		{
			var odefaults = datatable.defaults.columns;
			var icol = osettings.aocolumns.length;
			var ocol = $.extend( {}, datatable.models.ocolumn, odefaults, {
				"ssortingclass": osettings.oclasses.ssortable,
				"ssortingclassjui": osettings.oclasses.ssortjui,
				"nth": nth ? nth : document.createelement('th'),
				"stitle":    odefaults.stitle    ? odefaults.stitle    : nth ? nth.innerhtml : '',
				"adatasort": odefaults.adatasort ? odefaults.adatasort : [icol],
				"mdata": odefaults.mdata ? odefaults.odefaults : icol
			} );
			osettings.aocolumns.push( ocol );
			
			/* add a column specific filter */
			if ( osettings.aopresearchcols[ icol ] === undefined || osettings.aopresearchcols[ icol ] === null )
			{
				osettings.aopresearchcols[ icol ] = $.extend( {}, datatable.models.osearch );
			}
			else
			{
				var opre = osettings.aopresearchcols[ icol ];
				
				/* don't require that the user must specify bregex, bsmart or bcaseinsensitive */
				if ( opre.bregex === undefined )
				{
					opre.bregex = true;
				}
				
				if ( opre.bsmart === undefined )
				{
					opre.bsmart = true;
				}
				
				if ( opre.bcaseinsensitive === undefined )
				{
					opre.bcaseinsensitive = true;
				}
			}
			
			/* use the column options function to initialise classes etc */
			_fncolumnoptions( osettings, icol, null );
		}
		
		
		/**
		 * apply options for a column
		 *  @param {object} osettings datatables settings object
		 *  @param {int} icol column index to consider
		 *  @param {object} ooptions object with stype, bvisible and bsearchable etc
		 *  @memberof datatable#oapi
		 */
		function _fncolumnoptions( osettings, icol, ooptions )
		{
			var ocol = osettings.aocolumns[ icol ];
			
			/* user specified column options */
			if ( ooptions !== undefined && ooptions !== null )
			{
				/* backwards compatibility for mdataprop */
				if ( ooptions.mdataprop && !ooptions.mdata )
				{
					ooptions.mdata = ooptions.mdataprop;
				}
		
				if ( ooptions.stype !== undefined )
				{
					ocol.stype = ooptions.stype;
					ocol._bautotype = false;
				}
				
				$.extend( ocol, ooptions );
				_fnmap( ocol, ooptions, "swidth", "swidthorig" );
		
				/* idatasort to be applied (backwards compatibility), but adatasort will take
				 * priority if defined
				 */
				if ( ooptions.idatasort !== undefined )
				{
					ocol.adatasort = [ ooptions.idatasort ];
				}
				_fnmap( ocol, ooptions, "adatasort" );
			}
		
			/* cache the data get and set functions for speed */
			var mrender = ocol.mrender ? _fngetobjectdatafn( ocol.mrender ) : null;
			var mdata = _fngetobjectdatafn( ocol.mdata );
		
			ocol.fngetdata = function (odata, sspecific) {
				var innerdata = mdata( odata, sspecific );
		
				if ( ocol.mrender && (sspecific && sspecific !== '') )
				{
					return mrender( innerdata, sspecific, odata );
				}
				return innerdata;
			};
			ocol.fnsetdata = _fnsetobjectdatafn( ocol.mdata );
			
			/* feature sorting overrides column specific when off */
			if ( !osettings.ofeatures.bsort )
			{
				ocol.bsortable = false;
			}
			
			/* check that the class assignment is correct for sorting */
			if ( !ocol.bsortable ||
				 ($.inarray('asc', ocol.assorting) == -1 && $.inarray('desc', ocol.assorting) == -1) )
			{
				ocol.ssortingclass = osettings.oclasses.ssortablenone;
				ocol.ssortingclassjui = "";
			}
			else if ( $.inarray('asc', ocol.assorting) == -1 && $.inarray('desc', ocol.assorting) == -1 )
			{
				ocol.ssortingclass = osettings.oclasses.ssortable;
				ocol.ssortingclassjui = osettings.oclasses.ssortjui;
			}
			else if ( $.inarray('asc', ocol.assorting) != -1 && $.inarray('desc', ocol.assorting) == -1 )
			{
				ocol.ssortingclass = osettings.oclasses.ssortableasc;
				ocol.ssortingclassjui = osettings.oclasses.ssortjuiascallowed;
			}
			else if ( $.inarray('asc', ocol.assorting) == -1 && $.inarray('desc', ocol.assorting) != -1 )
			{
				ocol.ssortingclass = osettings.oclasses.ssortabledesc;
				ocol.ssortingclassjui = osettings.oclasses.ssortjuidescallowed;
			}
		}
		
		
		/**
		 * adjust the table column widths for new data. note: you would probably want to 
		 * do a redraw after calling this function!
		 *  @param {object} osettings datatables settings object
		 *  @memberof datatable#oapi
		 */
		function _fnadjustcolumnsizing ( osettings )
		{
			/* not interested in doing column width calculation if auto-width is disabled */
			if ( osettings.ofeatures.bautowidth === false )
			{
				return false;
			}
			
			_fncalculatecolumnwidths( osettings );
			for ( var i=0 , ilen=osettings.aocolumns.length ; i<ilen ; i++ )
			{
				osettings.aocolumns[i].nth.style.width = osettings.aocolumns[i].swidth;
			}
		}
		
		
		/**
		 * covert the index of a visible column to the index in the data array (take account
		 * of hidden columns)
		 *  @param {object} osettings datatables settings object
		 *  @param {int} imatch visible column index to lookup
		 *  @returns {int} i the data index
		 *  @memberof datatable#oapi
		 */
		function _fnvisibletocolumnindex( osettings, imatch )
		{
			var aivis = _fngetcolumns( osettings, 'bvisible' );
		
			return typeof aivis[imatch] === 'number' ?
				aivis[imatch] :
				null;
		}
		
		
		/**
		 * covert the index of an index in the data array and convert it to the visible
		 *   column index (take account of hidden columns)
		 *  @param {int} imatch column index to lookup
		 *  @param {object} osettings datatables settings object
		 *  @returns {int} i the data index
		 *  @memberof datatable#oapi
		 */
		function _fncolumnindextovisible( osettings, imatch )
		{
			var aivis = _fngetcolumns( osettings, 'bvisible' );
			var ipos = $.inarray( imatch, aivis );
		
			return ipos !== -1 ? ipos : null;
		}
		
		
		/**
		 * get the number of visible columns
		 *  @param {object} osettings datatables settings object
		 *  @returns {int} i the number of visible columns
		 *  @memberof datatable#oapi
		 */
		function _fnvisblecolumns( osettings )
		{
			return _fngetcolumns( osettings, 'bvisible' ).length;
		}
		
		
		/**
		 * get an array of column indexes that match a given property
		 *  @param {object} osettings datatables settings object
		 *  @param {string} sparam parameter in aocolumns to look for - typically 
		 *    bvisible or bsearchable
		 *  @returns {array} array of indexes with matched properties
		 *  @memberof datatable#oapi
		 */
		function _fngetcolumns( osettings, sparam )
		{
			var a = [];
		
			$.map( osettings.aocolumns, function(val, i) {
				if ( val[sparam] ) {
					a.push( i );
				}
			} );
		
			return a;
		}
		
		
		/**
		 * get the sort type based on an input string
		 *  @param {string} sdata data we wish to know the type of
		 *  @returns {string} type (defaults to 'string' if no type can be detected)
		 *  @memberof datatable#oapi
		 */
		function _fndetecttype( sdata )
		{
			var atypes = datatable.ext.atypes;
			var ilen = atypes.length;
			
			for ( var i=0 ; i<ilen ; i++ )
			{
				var stype = atypes[i]( sdata );
				if ( stype !== null )
				{
					return stype;
				}
			}
			
			return 'string';
		}
		
		
		/**
		 * figure out how to reorder a display list
		 *  @param {object} osettings datatables settings object
		 *  @returns array {int} aireturn index list for reordering
		 *  @memberof datatable#oapi
		 */
		function _fnreorderindex ( osettings, scolumns )
		{
			var acolumns = scolumns.split(',');
			var aireturn = [];
			
			for ( var i=0, ilen=osettings.aocolumns.length ; i<ilen ; i++ )
			{
				for ( var j=0 ; j<ilen ; j++ )
				{
					if ( osettings.aocolumns[i].sname == acolumns[j] )
					{
						aireturn.push( j );
						break;
					}
				}
			}
			
			return aireturn;
		}
		
		
		/**
		 * get the column ordering that datatables expects
		 *  @param {object} osettings datatables settings object
		 *  @returns {string} comma separated list of names
		 *  @memberof datatable#oapi
		 */
		function _fncolumnordering ( osettings )
		{
			var snames = '';
			for ( var i=0, ilen=osettings.aocolumns.length ; i<ilen ; i++ )
			{
				snames += osettings.aocolumns[i].sname+',';
			}
			if ( snames.length == ilen )
			{
				return "";
			}
			return snames.slice(0, -1);
		}
		
		
		/**
		 * take the column definitions and static columns arrays and calculate how
		 * they relate to column indexes. the callback function will then apply the
		 * definition found for a column to a suitable configuration object.
		 *  @param {object} osettings datatables settings object
		 *  @param {array} aocoldefs the aocolumndefs array that is to be applied
		 *  @param {array} aocols the aocolumns array that defines columns individually
		 *  @param {function} fn callback function - takes two parameters, the calculated
		 *    column index and the definition for that column.
		 *  @memberof datatable#oapi
		 */
		function _fnapplycolumndefs( osettings, aocoldefs, aocols, fn )
		{
			var i, ilen, j, jlen, k, klen;
		
			// column definitions with atargets
			if ( aocoldefs )
			{
				/* loop over the definitions array - loop in reverse so first instance has priority */
				for ( i=aocoldefs.length-1 ; i>=0 ; i-- )
				{
					/* each definition can target multiple columns, as it is an array */
					var atargets = aocoldefs[i].atargets;
					if ( !$.isarray( atargets ) )
					{
						_fnlog( osettings, 1, 'atargets must be an array of targets, not a '+(typeof atargets) );
					}
		
					for ( j=0, jlen=atargets.length ; j<jlen ; j++ )
					{
						if ( typeof atargets[j] === 'number' && atargets[j] >= 0 )
						{
							/* add columns that we don't yet know about */
							while( osettings.aocolumns.length <= atargets[j] )
							{
								_fnaddcolumn( osettings );
							}
		
							/* integer, basic index */
							fn( atargets[j], aocoldefs[i] );
						}
						else if ( typeof atargets[j] === 'number' && atargets[j] < 0 )
						{
							/* negative integer, right to left column counting */
							fn( osettings.aocolumns.length+atargets[j], aocoldefs[i] );
						}
						else if ( typeof atargets[j] === 'string' )
						{
							/* class name matching on th element */
							for ( k=0, klen=osettings.aocolumns.length ; k<klen ; k++ )
							{
								if ( atargets[j] == "_all" ||
								     $(osettings.aocolumns[k].nth).hasclass( atargets[j] ) )
								{
									fn( k, aocoldefs[i] );
								}
							}
						}
					}
				}
			}
		
			// statically defined columns array
			if ( aocols )
			{
				for ( i=0, ilen=aocols.length ; i<ilen ; i++ )
				{
					fn( i, aocols[i] );
				}
			}
		}
		
		/**
		 * add a data array to the table, creating dom node etc. this is the parallel to 
		 * _fngatherdata, but for adding rows from a javascript source, rather than a
		 * dom source.
		 *  @param {object} osettings datatables settings object
		 *  @param {array} adata data array to be added
		 *  @returns {int} >=0 if successful (index of new aodata entry), -1 if failed
		 *  @memberof datatable#oapi
		 */
		function _fnadddata ( osettings, adatasupplied )
		{
			var ocol;
			
			/* take an independent copy of the data source so we can bash it about as we wish */
			var adatain = ($.isarray(adatasupplied)) ?
				adatasupplied.slice() :
				$.extend( true, {}, adatasupplied );
			
			/* create the object for storing information about this new row */
			var irow = osettings.aodata.length;
			var odata = $.extend( true, {}, datatable.models.orow );
			odata._adata = adatain;
			osettings.aodata.push( odata );
		
			/* create the cells */
			var ntd, sthistype;
			for ( var i=0, ilen=osettings.aocolumns.length ; i<ilen ; i++ )
			{
				ocol = osettings.aocolumns[i];
		
				/* use rendered data for filtering / sorting */
				if ( typeof ocol.fnrender === 'function' && ocol.buserendered && ocol.mdata !== null )
				{
					_fnsetcelldata( osettings, irow, i, _fnrender(osettings, irow, i) );
				}
				else
				{
					_fnsetcelldata( osettings, irow, i, _fngetcelldata( osettings, irow, i ) );
				}
				
				/* see if we should auto-detect the column type */
				if ( ocol._bautotype && ocol.stype != 'string' )
				{
					/* attempt to auto detect the type - same as _fngatherdata() */
					var svartype = _fngetcelldata( osettings, irow, i, 'type' );
					if ( svartype !== null && svartype !== '' )
					{
						sthistype = _fndetecttype( svartype );
						if ( ocol.stype === null )
						{
							ocol.stype = sthistype;
						}
						else if ( ocol.stype != sthistype && ocol.stype != "html" )
						{
							/* string is always the 'fallback' option */
							ocol.stype = 'string';
						}
					}
				}
			}
			
			/* add to the display array */
			osettings.aidisplaymaster.push( irow );
		
			/* create the dom information */
			if ( !osettings.ofeatures.bdeferrender )
			{
				_fncreatetr( osettings, irow );
			}
		
			return irow;
		}
		
		
		/**
		 * read in the data from the target table from the dom
		 *  @param {object} osettings datatables settings object
		 *  @memberof datatable#oapi
		 */
		function _fngatherdata( osettings )
		{
			var iloop, i, ilen, j, jlen, jinner,
			 	ntds, ntrs, ntd, ntr, alocaldata, ithisindex,
				irow, irows, icolumn, icolumns, snodename,
				ocol, odata;
			
			/*
			 * process by row first
			 * add the data object for the whole table - storing the tr node. note - no point in getting
			 * dom based data if we are going to go and replace it with ajax source data.
			 */
			if ( osettings.bdeferloading || osettings.sajaxsource === null )
			{
				ntr = osettings.ntbody.firstchild;
				while ( ntr )
				{
					if ( ntr.nodename.touppercase() == "tr" )
					{
						ithisindex = osettings.aodata.length;
						ntr._dt_rowindex = ithisindex;
						osettings.aodata.push( $.extend( true, {}, datatable.models.orow, {
							"ntr": ntr
						} ) );
		
						osettings.aidisplaymaster.push( ithisindex );
						ntd = ntr.firstchild;
						jinner = 0;
						while ( ntd )
						{
							snodename = ntd.nodename.touppercase();
							if ( snodename == "td" || snodename == "th" )
							{
								_fnsetcelldata( osettings, ithisindex, jinner, $.trim(ntd.innerhtml) );
								jinner++;
							}
							ntd = ntd.nextsibling;
						}
					}
					ntr = ntr.nextsibling;
				}
			}
			
			/* gather in the td elements of the table - note that this is basically the same as
			 * fngettdnodes, but that function takes account of hidden columns, which we haven't yet
			 * setup!
			 */
			ntrs = _fngettrnodes( osettings );
			ntds = [];
			for ( i=0, ilen=ntrs.length ; i<ilen ; i++ )
			{
				ntd = ntrs[i].firstchild;
				while ( ntd )
				{
					snodename = ntd.nodename.touppercase();
					if ( snodename == "td" || snodename == "th" )
					{
						ntds.push( ntd );
					}
					ntd = ntd.nextsibling;
				}
			}
			
			/* now process by column */
			for ( icolumn=0, icolumns=osettings.aocolumns.length ; icolumn<icolumns ; icolumn++ )
			{
				ocol = osettings.aocolumns[icolumn];
		
				/* get the title of the column - unless there is a user set one */
				if ( ocol.stitle === null )
				{
					ocol.stitle = ocol.nth.innerhtml;
				}
				
				var
					bautotype = ocol._bautotype,
					brender = typeof ocol.fnrender === 'function',
					bclass = ocol.sclass !== null,
					bvisible = ocol.bvisible,
					ncell, sthistype, srendered, svaltype;
				
				/* a single loop to rule them all (and be more efficient) */
				if ( bautotype || brender || bclass || !bvisible )
				{
					for ( irow=0, irows=osettings.aodata.length ; irow<irows ; irow++ )
					{
						odata = osettings.aodata[irow];
						ncell = ntds[ (irow*icolumns) + icolumn ];
						
						/* type detection */
						if ( bautotype && ocol.stype != 'string' )
						{
							svaltype = _fngetcelldata( osettings, irow, icolumn, 'type' );
							if ( svaltype !== '' )
							{
								sthistype = _fndetecttype( svaltype );
								if ( ocol.stype === null )
								{
									ocol.stype = sthistype;
								}
								else if ( ocol.stype != sthistype && 
								          ocol.stype != "html" )
								{
									/* string is always the 'fallback' option */
									ocol.stype = 'string';
								}
							}
						}
		
						if ( ocol.mrender )
						{
							// mrender has been defined, so we need to get the value and set it
							ncell.innerhtml = _fngetcelldata( osettings, irow, icolumn, 'display' );
						}
						else if ( ocol.mdata !== icolumn )
						{
							// if mdata is not the same as the column number, then we need to
							// get the dev set value. if it is the column, no point in wasting
							// time setting the value that is already there!
							ncell.innerhtml = _fngetcelldata( osettings, irow, icolumn, 'display' );
						}
						
						/* rendering */
						if ( brender )
						{
							srendered = _fnrender( osettings, irow, icolumn );
							ncell.innerhtml = srendered;
							if ( ocol.buserendered )
							{
								/* use the rendered data for filtering / sorting */
								_fnsetcelldata( osettings, irow, icolumn, srendered );
							}
						}
						
						/* classes */
						if ( bclass )
						{
							ncell.classname += ' '+ocol.sclass;
						}
						
						/* column visibility */
						if ( !bvisible )
						{
							odata._anhidden[icolumn] = ncell;
							ncell.parentnode.removechild( ncell );
						}
						else
						{
							odata._anhidden[icolumn] = null;
						}
		
						if ( ocol.fncreatedcell )
						{
							ocol.fncreatedcell.call( osettings.oinstance,
								ncell, _fngetcelldata( osettings, irow, icolumn, 'display' ), odata._adata, irow, icolumn
							);
						}
					}
				}
			}
		
			/* row created callbacks */
			if ( osettings.aorowcreatedcallback.length !== 0 )
			{
				for ( i=0, ilen=osettings.aodata.length ; i<ilen ; i++ )
				{
					odata = osettings.aodata[i];
					_fncallbackfire( osettings, 'aorowcreatedcallback', null, [odata.ntr, odata._adata, i] );
				}
			}
		}
		
		
		/**
		 * take a tr element and convert it to an index in aodata
		 *  @param {object} osettings datatables settings object
		 *  @param {node} n the tr element to find
		 *  @returns {int} index if the node is found, null if not
		 *  @memberof datatable#oapi
		 */
		function _fnnodetodataindex( osettings, n )
		{
			return (n._dt_rowindex!==undefined) ? n._dt_rowindex : null;
		}
		
		
		/**
		 * take a td element and convert it into a column data index (not the visible index)
		 *  @param {object} osettings datatables settings object
		 *  @param {int} irow the row number the td/th can be found in
		 *  @param {node} n the td/th element to find
		 *  @returns {int} index if the node is found, -1 if not
		 *  @memberof datatable#oapi
		 */
		function _fnnodetocolumnindex( osettings, irow, n )
		{
			var ancells = _fngettdnodes( osettings, irow );
		
			for ( var i=0, ilen=osettings.aocolumns.length ; i<ilen ; i++ )
			{
				if ( ancells[i] === n )
				{
					return i;
				}
			}
			return -1;
		}
		
		
		/**
		 * get an array of data for a given row from the internal data cache
		 *  @param {object} osettings datatables settings object
		 *  @param {int} irow aodata row id
		 *  @param {string} sspecific data get type ('type' 'filter' 'sort')
		 *  @param {array} aicolumns array of column indexes to get data from
		 *  @returns {array} data array
		 *  @memberof datatable#oapi
		 */
		function _fngetrowdata( osettings, irow, sspecific, aicolumns )
		{
			var out = [];
			for ( var i=0, ilen=aicolumns.length ; i<ilen ; i++ )
			{
				out.push( _fngetcelldata( osettings, irow, aicolumns[i], sspecific ) );
			}
			return out;
		}
		
		
		/**
		 * get the data for a given cell from the internal cache, taking into account data mapping
		 *  @param {object} osettings datatables settings object
		 *  @param {int} irow aodata row id
		 *  @param {int} icol column index
		 *  @param {string} sspecific data get type ('display', 'type' 'filter' 'sort')
		 *  @returns {*} cell data
		 *  @memberof datatable#oapi
		 */
		function _fngetcelldata( osettings, irow, icol, sspecific )
		{
			var sdata;
			var ocol = osettings.aocolumns[icol];
			var odata = osettings.aodata[irow]._adata;
		
			if ( (sdata=ocol.fngetdata( odata, sspecific )) === undefined )
			{
				if ( osettings.idrawerror != osettings.idraw && ocol.sdefaultcontent === null )
				{
					_fnlog( osettings, 0, "requested unknown parameter "+
						(typeof ocol.mdata=='function' ? '{mdata function}' : "'"+ocol.mdata+"'")+
						" from the data source for row "+irow );
					osettings.idrawerror = osettings.idraw;
				}
				return ocol.sdefaultcontent;
			}
		
			/* when the data source is null, we can use default column data */
			if ( sdata === null && ocol.sdefaultcontent !== null )
			{
				sdata = ocol.sdefaultcontent;
			}
			else if ( typeof sdata === 'function' )
			{
				/* if the data source is a function, then we run it and use the return */
				return sdata();
			}
		
			if ( sspecific == 'display' && sdata === null )
			{
				return '';
			}
			return sdata;
		}
		
		
		/**
		 * set the value for a specific cell, into the internal data cache
		 *  @param {object} osettings datatables settings object
		 *  @param {int} irow aodata row id
		 *  @param {int} icol column index
		 *  @param {*} val value to set
		 *  @memberof datatable#oapi
		 */
		function _fnsetcelldata( osettings, irow, icol, val )
		{
			var ocol = osettings.aocolumns[icol];
			var odata = osettings.aodata[irow]._adata;
		
			ocol.fnsetdata( odata, val );
		}
		
		
		// private variable that is used to match array syntax in the data property object
		var __rearray = /\[.*?\]$/;
		
		/**
		 * return a function that can be used to get data from a source object, taking
		 * into account the ability to use nested objects as a source
		 *  @param {string|int|function} msource the data source for the object
		 *  @returns {function} data get function
		 *  @memberof datatable#oapi
		 */
		function _fngetobjectdatafn( msource )
		{
			if ( msource === null )
			{
				/* give an empty string for rendering / sorting etc */
				return function (data, type) {
					return null;
				};
			}
			else if ( typeof msource === 'function' )
			{
				return function (data, type, extra) {
					return msource( data, type, extra );
				};
			}
			else if ( typeof msource === 'string' && (msource.indexof('.') !== -1 || msource.indexof('[') !== -1) )
			{
				/* if there is a . in the source string then the data source is in a 
				 * nested object so we loop over the data for each level to get the next
				 * level down. on each loop we test for undefined, and if found immediately
				 * return. this allows entire objects to be missing and sdefaultcontent to
				 * be used if defined, rather than throwing an error
				 */
				var fetchdata = function (data, type, src) {
					var a = src.split('.');
					var arraynotation, out, innersrc;
		
					if ( src !== "" )
					{
						for ( var i=0, ilen=a.length ; i<ilen ; i++ )
						{
							// check if we are dealing with an array notation request
							arraynotation = a[i].match(__rearray);
		
							if ( arraynotation ) {
								a[i] = a[i].replace(__rearray, '');
		
								// condition allows simply [] to be passed in
								if ( a[i] !== "" ) {
									data = data[ a[i] ];
								}
								out = [];
								
								// get the remainder of the nested object to get
								a.splice( 0, i+1 );
								innersrc = a.join('.');
		
								// traverse each entry in the array getting the properties requested
								for ( var j=0, jlen=data.length ; j<jlen ; j++ ) {
									out.push( fetchdata( data[j], type, innersrc ) );
								}
		
								// if a string is given in between the array notation indicators, that
								// is used to join the strings together, otherwise an array is returned
								var join = arraynotation[0].substring(1, arraynotation[0].length-1);
								data = (join==="") ? out : out.join(join);
		
								// the inner call to fetchdata has already traversed through the remainder
								// of the source requested, so we exit from the loop
								break;
							}
		
							if ( data === null || data[ a[i] ] === undefined )
							{
								return undefined;
							}
							data = data[ a[i] ];
						}
					}
		
					return data;
				};
		
				return function (data, type) {
					return fetchdata( data, type, msource );
				};
			}
			else
			{
				/* array or flat object mapping */
				return function (data, type) {
					return data[msource];	
				};
			}
		}
		
		
		/**
		 * return a function that can be used to set data from a source object, taking
		 * into account the ability to use nested objects as a source
		 *  @param {string|int|function} msource the data source for the object
		 *  @returns {function} data set function
		 *  @memberof datatable#oapi
		 */
		function _fnsetobjectdatafn( msource )
		{
			if ( msource === null )
			{
				/* nothing to do when the data source is null */
				return function (data, val) {};
			}
			else if ( typeof msource === 'function' )
			{
				return function (data, val) {
					msource( data, 'set', val );
				};
			}
			else if ( typeof msource === 'string' && (msource.indexof('.') !== -1 || msource.indexof('[') !== -1) )
			{
				/* like the get, we need to get data from a nested object */
				var setdata = function (data, val, src) {
					var a = src.split('.'), b;
					var arraynotation, o, innersrc;
		
					for ( var i=0, ilen=a.length-1 ; i<ilen ; i++ )
					{
						// check if we are dealing with an array notation request
						arraynotation = a[i].match(__rearray);
		
						if ( arraynotation )
						{
							a[i] = a[i].replace(__rearray, '');
							data[ a[i] ] = [];
							
							// get the remainder of the nested object to set so we can recurse
							b = a.slice();
							b.splice( 0, i+1 );
							innersrc = b.join('.');
		
							// traverse each entry in the array setting the properties requested
							for ( var j=0, jlen=val.length ; j<jlen ; j++ )
							{
								o = {};
								setdata( o, val[j], innersrc );
								data[ a[i] ].push( o );
							}
		
							// the inner call to setdata has already traversed through the remainder
							// of the source and has set the data, thus we can exit here
							return;
						}
		
						// if the nested object doesn't currently exist - since we are
						// trying to set the value - create it
						if ( data[ a[i] ] === null || data[ a[i] ] === undefined )
						{
							data[ a[i] ] = {};
						}
						data = data[ a[i] ];
					}
		
					// if array notation is used, we just want to strip it and use the property name
					// and assign the value. if it isn't used, then we get the result we want anyway
					data[ a[a.length-1].replace(__rearray, '') ] = val;
				};
		
				return function (data, val) {
					return setdata( data, val, msource );
				};
			}
			else
			{
				/* array or flat object mapping */
				return function (data, val) {
					data[msource] = val;	
				};
			}
		}
		
		
		/**
		 * return an array with the full table data
		 *  @param {object} osettings datatables settings object
		 *  @returns array {array} adata master data array
		 *  @memberof datatable#oapi
		 */
		function _fngetdatamaster ( osettings )
		{
			var adata = [];
			var ilen = osettings.aodata.length;
			for ( var i=0 ; i<ilen; i++ )
			{
				adata.push( osettings.aodata[i]._adata );
			}
			return adata;
		}
		
		
		/**
		 * nuke the table
		 *  @param {object} osettings datatables settings object
		 *  @memberof datatable#oapi
		 */
		function _fncleartable( osettings )
		{
			osettings.aodata.splice( 0, osettings.aodata.length );
			osettings.aidisplaymaster.splice( 0, osettings.aidisplaymaster.length );
			osettings.aidisplay.splice( 0, osettings.aidisplay.length );
			_fncalculateend( osettings );
		}
		
		
		 /**
		 * take an array of integers (index array) and remove a target integer (value - not 
		 * the key!)
		 *  @param {array} a index array to target
		 *  @param {int} itarget value to find
		 *  @memberof datatable#oapi
		 */
		function _fndeleteindex( a, itarget )
		{
			var itargetindex = -1;
			
			for ( var i=0, ilen=a.length ; i<ilen ; i++ )
			{
				if ( a[i] == itarget )
				{
					itargetindex = i;
				}
				else if ( a[i] > itarget )
				{
					a[i]--;
				}
			}
			
			if ( itargetindex != -1 )
			{
				a.splice( itargetindex, 1 );
			}
		}
		
		
		 /**
		 * call the developer defined fnrender function for a given cell (row/column) with
		 * the required parameters and return the result.
		 *  @param {object} osettings datatables settings object
		 *  @param {int} irow aodata index for the row
		 *  @param {int} icol aocolumns index for the column
		 *  @returns {*} return of the developer's fnrender function
		 *  @memberof datatable#oapi
		 */
		function _fnrender( osettings, irow, icol )
		{
			var ocol = osettings.aocolumns[icol];
		
			return ocol.fnrender( {
				"idatarow":    irow,
				"idatacolumn": icol,
				"osettings":   osettings,
				"adata":       osettings.aodata[irow]._adata,
				"mdataprop":   ocol.mdata
			}, _fngetcelldata(osettings, irow, icol, 'display') );
		}
		/**
		 * create a new tr element (and it's td children) for a row
		 *  @param {object} osettings datatables settings object
		 *  @param {int} irow row to consider
		 *  @memberof datatable#oapi
		 */
		function _fncreatetr ( osettings, irow )
		{
			var odata = osettings.aodata[irow];
			var ntd;
		
			if ( odata.ntr === null )
			{
				odata.ntr = document.createelement('tr');
		
				/* use a private property on the node to allow reserve mapping from the node
				 * to the aodata array for fast look up
				 */
				odata.ntr._dt_rowindex = irow;
		
				/* special parameters can be given by the data source to be used on the row */
				if ( odata._adata.dt_rowid )
				{
					odata.ntr.id = odata._adata.dt_rowid;
				}
		
				if ( odata._adata.dt_rowclass )
				{
					odata.ntr.classname = odata._adata.dt_rowclass;
				}
		
				/* process each column */
				for ( var i=0, ilen=osettings.aocolumns.length ; i<ilen ; i++ )
				{
					var ocol = osettings.aocolumns[i];
					ntd = document.createelement( ocol.scelltype );
		
					/* render if needed - if buserendered is true then we already have the rendered
					 * value in the data source - so can just use that
					 */
					ntd.innerhtml = (typeof ocol.fnrender === 'function' && (!ocol.buserendered || ocol.mdata === null)) ?
						_fnrender( osettings, irow, i ) :
						_fngetcelldata( osettings, irow, i, 'display' );
				
					/* add user defined class */
					if ( ocol.sclass !== null )
					{
						ntd.classname = ocol.sclass;
					}
					
					if ( ocol.bvisible )
					{
						odata.ntr.appendchild( ntd );
						odata._anhidden[i] = null;
					}
					else
					{
						odata._anhidden[i] = ntd;
					}
		
					if ( ocol.fncreatedcell )
					{
						ocol.fncreatedcell.call( osettings.oinstance,
							ntd, _fngetcelldata( osettings, irow, i, 'display' ), odata._adata, irow, i
						);
					}
				}
		
				_fncallbackfire( osettings, 'aorowcreatedcallback', null, [odata.ntr, odata._adata, irow] );
			}
		}
		
		
		/**
		 * create the html header for the table
		 *  @param {object} osettings datatables settings object
		 *  @memberof datatable#oapi
		 */
		function _fnbuildhead( osettings )
		{
			var i, nth, ilen, j, jlen;
			var iths = $('th, td', osettings.nthead).length;
			var icorrector = 0;
			var jqchildren;
			
			/* if there is a header in place - then use it - otherwise it's going to get nuked... */
			if ( iths !== 0 )
			{
				/* we've got a thead from the dom, so remove hidden columns and apply width to vis cols */
				for ( i=0, ilen=osettings.aocolumns.length ; i<ilen ; i++ )
				{
					nth = osettings.aocolumns[i].nth;
					nth.setattribute('role', 'columnheader');
					if ( osettings.aocolumns[i].bsortable )
					{
						nth.setattribute('tabindex', osettings.itabindex);
						nth.setattribute('aria-controls', osettings.stableid);
					}
		
					if ( osettings.aocolumns[i].sclass !== null )
					{
						$(nth).addclass( osettings.aocolumns[i].sclass );
					}
					
					/* set the title of the column if it is user defined (not what was auto detected) */
					if ( osettings.aocolumns[i].stitle != nth.innerhtml )
					{
						nth.innerhtml = osettings.aocolumns[i].stitle;
					}
				}
			}
			else
			{
				/* we don't have a header in the dom - so we are going to have to create one */
				var ntr = document.createelement( "tr" );
				
				for ( i=0, ilen=osettings.aocolumns.length ; i<ilen ; i++ )
				{
					nth = osettings.aocolumns[i].nth;
					nth.innerhtml = osettings.aocolumns[i].stitle;
					nth.setattribute('tabindex', '0');
					
					if ( osettings.aocolumns[i].sclass !== null )
					{
						$(nth).addclass( osettings.aocolumns[i].sclass );
					}
					
					ntr.appendchild( nth );
				}
				$(osettings.nthead).html( '' )[0].appendchild( ntr );
				_fndetectheader( osettings.aoheader, osettings.nthead );
			}
			
			/* aria role for the rows */	
			$(osettings.nthead).children('tr').attr('role', 'row');
			
			/* add the extra markup needed by jquery ui's themes */
			if ( osettings.bjui )
			{
				for ( i=0, ilen=osettings.aocolumns.length ; i<ilen ; i++ )
				{
					nth = osettings.aocolumns[i].nth;
					
					var ndiv = document.createelement('div');
					ndiv.classname = osettings.oclasses.ssortjuiwrapper;
					$(nth).contents().appendto(ndiv);
					
					var nspan = document.createelement('span');
					nspan.classname = osettings.oclasses.ssorticon;
					ndiv.appendchild( nspan );
					nth.appendchild( ndiv );
				}
			}
			
			if ( osettings.ofeatures.bsort )
			{
				for ( i=0 ; i<osettings.aocolumns.length ; i++ )
				{
					if ( osettings.aocolumns[i].bsortable !== false )
					{
						_fnsortattachlistener( osettings, osettings.aocolumns[i].nth, i );
					}
					else
					{
						$(osettings.aocolumns[i].nth).addclass( osettings.oclasses.ssortablenone );
					}
				}
			}
			
			/* deal with the footer - add classes if required */
			if ( osettings.oclasses.sfooterth !== "" )
			{
				$(osettings.ntfoot).children('tr').children('th').addclass( osettings.oclasses.sfooterth );
			}
			
			/* cache the footer elements */
			if ( osettings.ntfoot !== null )
			{
				var ancells = _fngetuniqueths( osettings, null, osettings.aofooter );
				for ( i=0, ilen=osettings.aocolumns.length ; i<ilen ; i++ )
				{
					if ( ancells[i] )
					{
						osettings.aocolumns[i].ntf = ancells[i];
						if ( osettings.aocolumns[i].sclass )
						{
							$(ancells[i]).addclass( osettings.aocolumns[i].sclass );
						}
					}
				}
			}
		}
		
		
		/**
		 * draw the header (or footer) element based on the column visibility states. the
		 * methodology here is to use the layout array from _fndetectheader, modified for
		 * the instantaneous column visibility, to construct the new layout. the grid is
		 * traversed over cell at a time in a rows x columns grid fashion, although each 
		 * cell insert can cover multiple elements in the grid - which is tracks using the
		 * aapplied array. cell inserts in the grid will only occur where there isn't
		 * already a cell in that position.
		 *  @param {object} osettings datatables settings object
		 *  @param array {objects} aosource layout array from _fndetectheader
		 *  @param {boolean} [bincludehidden=false] if true then include the hidden columns in the calc, 
		 *  @memberof datatable#oapi
		 */
		function _fndrawhead( osettings, aosource, bincludehidden )
		{
			var i, ilen, j, jlen, k, klen, n, nlocaltr;
			var aolocal = [];
			var aapplied = [];
			var icolumns = osettings.aocolumns.length;
			var irowspan, icolspan;
		
			if (  bincludehidden === undefined )
			{
				bincludehidden = false;
			}
		
			/* make a copy of the master layout array, but without the visible columns in it */
			for ( i=0, ilen=aosource.length ; i<ilen ; i++ )
			{
				aolocal[i] = aosource[i].slice();
				aolocal[i].ntr = aosource[i].ntr;
		
				/* remove any columns which are currently hidden */
				for ( j=icolumns-1 ; j>=0 ; j-- )
				{
					if ( !osettings.aocolumns[j].bvisible && !bincludehidden )
					{
						aolocal[i].splice( j, 1 );
					}
				}
		
				/* prep the applied array - it needs an element for each row */
				aapplied.push( [] );
			}
		
			for ( i=0, ilen=aolocal.length ; i<ilen ; i++ )
			{
				nlocaltr = aolocal[i].ntr;
				
				/* all cells are going to be replaced, so empty out the row */
				if ( nlocaltr )
				{
					while( (n = nlocaltr.firstchild) )
					{
						nlocaltr.removechild( n );
					}
				}
		
				for ( j=0, jlen=aolocal[i].length ; j<jlen ; j++ )
				{
					irowspan = 1;
					icolspan = 1;
		
					/* check to see if there is already a cell (row/colspan) covering our target
					 * insert point. if there is, then there is nothing to do.
					 */
					if ( aapplied[i][j] === undefined )
					{
						nlocaltr.appendchild( aolocal[i][j].cell );
						aapplied[i][j] = 1;
		
						/* expand the cell to cover as many rows as needed */
						while ( aolocal[i+irowspan] !== undefined &&
						        aolocal[i][j].cell == aolocal[i+irowspan][j].cell )
						{
							aapplied[i+irowspan][j] = 1;
							irowspan++;
						}
		
						/* expand the cell to cover as many columns as needed */
						while ( aolocal[i][j+icolspan] !== undefined &&
						        aolocal[i][j].cell == aolocal[i][j+icolspan].cell )
						{
							/* must update the applied array over the rows for the columns */
							for ( k=0 ; k<irowspan ; k++ )
							{
								aapplied[i+k][j+icolspan] = 1;
							}
							icolspan++;
						}
		
						/* do the actual expansion in the dom */
						aolocal[i][j].cell.rowspan = irowspan;
						aolocal[i][j].cell.colspan = icolspan;
					}
				}
			}
		}
		
		
		/**
		 * insert the required tr nodes into the table for display
		 *  @param {object} osettings datatables settings object
		 *  @memberof datatable#oapi
		 */
		function _fndraw( osettings )
		{
			/* provide a pre-callback function which can be used to cancel the draw is false is returned */
			var apredraw = _fncallbackfire( osettings, 'aopredrawcallback', 'predraw', [osettings] );
			if ( $.inarray( false, apredraw ) !== -1 )
			{
				_fnprocessingdisplay( osettings, false );
				return;
			}
			
			var i, ilen, n;
			var anrows = [];
			var irowcount = 0;
			var istripes = osettings.asstripeclasses.length;
			var iopenrows = osettings.aoopenrows.length;
			
			osettings.bdrawing = true;
			
			/* check and see if we have an initial draw position from state saving */
			if ( osettings.iinitdisplaystart !== undefined && osettings.iinitdisplaystart != -1 )
			{
				if ( osettings.ofeatures.bserverside )
				{
					osettings._idisplaystart = osettings.iinitdisplaystart;
				}
				else
				{
					osettings._idisplaystart = (osettings.iinitdisplaystart >= osettings.fnrecordsdisplay()) ?
						0 : osettings.iinitdisplaystart;
				}
				osettings.iinitdisplaystart = -1;
				_fncalculateend( osettings );
			}
			
			/* server-side processing draw intercept */
			if ( osettings.bdeferloading )
			{
				osettings.bdeferloading = false;
				osettings.idraw++;
			}
			else if ( !osettings.ofeatures.bserverside )
			{
				osettings.idraw++;
			}
			else if ( !osettings.bdestroying && !_fnajaxupdate( osettings ) )
			{
				return;
			}
			
			if ( osettings.aidisplay.length !== 0 )
			{
				var istart = osettings._idisplaystart;
				var iend = osettings._idisplayend;
				
				if ( osettings.ofeatures.bserverside )
				{
					istart = 0;
					iend = osettings.aodata.length;
				}
				
				for ( var j=istart ; j<iend ; j++ )
				{
					var aodata = osettings.aodata[ osettings.aidisplay[j] ];
					if ( aodata.ntr === null )
					{
						_fncreatetr( osettings, osettings.aidisplay[j] );
					}
		
					var nrow = aodata.ntr;
					
					/* remove the old striping classes and then add the new one */
					if ( istripes !== 0 )
					{
						var sstripe = osettings.asstripeclasses[ irowcount % istripes ];
						if ( aodata._srowstripe != sstripe )
						{
							$(nrow).removeclass( aodata._srowstripe ).addclass( sstripe );
							aodata._srowstripe = sstripe;
						}
					}
					
					/* row callback functions - might want to manipulate the row */
					_fncallbackfire( osettings, 'aorowcallback', null, 
						[nrow, osettings.aodata[ osettings.aidisplay[j] ]._adata, irowcount, j] );
					
					anrows.push( nrow );
					irowcount++;
					
					/* if there is an open row - and it is attached to this parent - attach it on redraw */
					if ( iopenrows !== 0 )
					{
						for ( var k=0 ; k<iopenrows ; k++ )
						{
							if ( nrow == osettings.aoopenrows[k].nparent )
							{
								anrows.push( osettings.aoopenrows[k].ntr );
								break;
							}
						}
					}
				}
			}
			else
			{
				/* table is empty - create a row with an empty message in it */
				anrows[ 0 ] = document.createelement( 'tr' );
				
				if ( osettings.asstripeclasses[0] )
				{
					anrows[ 0 ].classname = osettings.asstripeclasses[0];
				}
		
				var olang = osettings.olanguage;
				var szero = olang.szerorecords;
				if ( osettings.idraw == 1 && osettings.sajaxsource !== null && !osettings.ofeatures.bserverside )
				{
					szero = olang.sloadingrecords;
				}
				else if ( olang.semptytable && osettings.fnrecordstotal() === 0 )
				{
					szero = olang.semptytable;
				}
		
				var ntd = document.createelement( 'td' );
				ntd.setattribute( 'valign', "top" );
				ntd.colspan = _fnvisblecolumns( osettings );
				ntd.classname = osettings.oclasses.srowempty;
				ntd.innerhtml = _fninfomacros( osettings, szero );
				
				anrows[ irowcount ].appendchild( ntd );
			}
			
			/* header and footer callbacks */
			_fncallbackfire( osettings, 'aoheadercallback', 'header', [ $(osettings.nthead).children('tr')[0], 
				_fngetdatamaster( osettings ), osettings._idisplaystart, osettings.fndisplayend(), osettings.aidisplay ] );
			
			_fncallbackfire( osettings, 'aofootercallback', 'footer', [ $(osettings.ntfoot).children('tr')[0], 
				_fngetdatamaster( osettings ), osettings._idisplaystart, osettings.fndisplayend(), osettings.aidisplay ] );
			
			/* 
			 * need to remove any old row from the display - note we can't just empty the tbody using
			 * $().html('') since this will unbind the jquery event handlers (even although the node 
			 * still exists!) - equally we can't use innerhtml, since ie throws an exception.
			 */
			var
				naddfrag = document.createdocumentfragment(),
				nremovefrag = document.createdocumentfragment(),
				nbodypar, ntrs;
			
			if ( osettings.ntbody )
			{
				nbodypar = osettings.ntbody.parentnode;
				nremovefrag.appendchild( osettings.ntbody );
				
				/* when doing infinite scrolling, only remove child rows when sorting, filtering or start
				 * up. when not infinite scroll, always do it.
				 */
				if ( !osettings.oscroll.binfinite || !osettings._binitcomplete ||
				 	osettings.bsorted || osettings.bfiltered )
				{
					while( (n = osettings.ntbody.firstchild) )
					{
						osettings.ntbody.removechild( n );
					}
				}
				
				/* put the draw table into the dom */
				for ( i=0, ilen=anrows.length ; i<ilen ; i++ )
				{
					naddfrag.appendchild( anrows[i] );
				}
				
				osettings.ntbody.appendchild( naddfrag );
				if ( nbodypar !== null )
				{
					nbodypar.appendchild( osettings.ntbody );
				}
			}
			
			/* call all required callback functions for the end of a draw */
			_fncallbackfire( osettings, 'aodrawcallback', 'draw', [osettings] );
			
			/* draw is complete, sorting and filtering must be as well */
			osettings.bsorted = false;
			osettings.bfiltered = false;
			osettings.bdrawing = false;
			
			if ( osettings.ofeatures.bserverside )
			{
				_fnprocessingdisplay( osettings, false );
				if ( !osettings._binitcomplete )
				{
					_fninitcomplete( osettings );
				}
			}
		}
		
		
		/**
		 * redraw the table - taking account of the various features which are enabled
		 *  @param {object} osettings datatables settings object
		 *  @memberof datatable#oapi
		 */
		function _fnredraw( osettings )
		{
			if ( osettings.ofeatures.bsort )
			{
				/* sorting will refilter and draw for us */
				_fnsort( osettings, osettings.oprevioussearch );
			}
			else if ( osettings.ofeatures.bfilter )
			{
				/* filtering will redraw for us */
				_fnfiltercomplete( osettings, osettings.oprevioussearch );
			}
			else
			{
				_fncalculateend( osettings );
				_fndraw( osettings );
			}
		}
		
		
		/**
		 * add the options to the page html for the table
		 *  @param {object} osettings datatables settings object
		 *  @memberof datatable#oapi
		 */
		function _fnaddoptionshtml ( osettings )
		{
			/*
			 * create a temporary, empty, div which we can later on replace with what we have generated
			 * we do it this way to rendering the 'options' html offline - speed :-)
			 */
			var nholding = $('<div></div>')[0];
			osettings.ntable.parentnode.insertbefore( nholding, osettings.ntable );
			
			/* 
			 * all datatables are wrapped in a div
			 */
			osettings.ntablewrapper = $('<div id="'+osettings.stableid+'_wrapper" class="'+osettings.oclasses.swrapper+'" role="grid"></div>')[0];
			osettings.ntablereinsertbefore = osettings.ntable.nextsibling;
		
			/* track where we want to insert the option */
			var ninsertnode = osettings.ntablewrapper;
			
			/* loop over the user set positioning and place the elements as needed */
			var adom = osettings.sdom.split('');
			var ntmp, ipushfeature, coption, nnewnode, cnext, sattr, j;
			for ( var i=0 ; i<adom.length ; i++ )
			{
				ipushfeature = 0;
				coption = adom[i];
				
				if ( coption == '<' )
				{
					/* new container div */
					nnewnode = $('<div></div>')[0];
					
					/* check to see if we should append an id and/or a class name to the container */
					cnext = adom[i+1];
					if ( cnext == "'" || cnext == '"' )
					{
						sattr = "";
						j = 2;
						while ( adom[i+j] != cnext )
						{
							sattr += adom[i+j];
							j++;
						}
						
						/* replace jquery ui constants */
						if ( sattr == "h" )
						{
							sattr = osettings.oclasses.sjuiheader;
						}
						else if ( sattr == "f" )
						{
							sattr = osettings.oclasses.sjuifooter;
						}
						
						/* the attribute can be in the format of "#id.class", "#id" or "class" this logic
						 * breaks the string into parts and applies them as needed
						 */
						if ( sattr.indexof('.') != -1 )
						{
							var asplit = sattr.split('.');
							nnewnode.id = asplit[0].substr(1, asplit[0].length-1);
							nnewnode.classname = asplit[1];
						}
						else if ( sattr.charat(0) == "#" )
						{
							nnewnode.id = sattr.substr(1, sattr.length-1);
						}
						else
						{
							nnewnode.classname = sattr;
						}
						
						i += j; /* move along the position array */
					}
					
					ninsertnode.appendchild( nnewnode );
					ninsertnode = nnewnode;
				}
				else if ( coption == '>' )
				{
					/* end container div */
					ninsertnode = ninsertnode.parentnode;
				}
				else if ( coption == 'l' && osettings.ofeatures.bpaginate && osettings.ofeatures.blengthchange )
				{
					/* length */
					ntmp = _fnfeaturehtmllength( osettings );
					ipushfeature = 1;
				}
				else if ( coption == 'f' && osettings.ofeatures.bfilter )
				{
					/* filter */
					ntmp = _fnfeaturehtmlfilter( osettings );
					ipushfeature = 1;
				}
				else if ( coption == 'r' && osettings.ofeatures.bprocessing )
				{
					/* processing */
					ntmp = _fnfeaturehtmlprocessing( osettings );
					ipushfeature = 1;
				}
				else if ( coption == 't' )
				{
					/* table */
					ntmp = _fnfeaturehtmltable( osettings );
					ipushfeature = 1;
				}
				else if ( coption ==  'i' && osettings.ofeatures.binfo )
				{
					/* info */
					ntmp = _fnfeaturehtmlinfo( osettings );
					ipushfeature = 1;
				}
				else if ( coption == 'p' && osettings.ofeatures.bpaginate )
				{
					/* pagination */
					ntmp = _fnfeaturehtmlpaginate( osettings );
					ipushfeature = 1;
				}
				else if ( datatable.ext.aofeatures.length !== 0 )
				{
					/* plug-in features */
					var aofeatures = datatable.ext.aofeatures;
					for ( var k=0, klen=aofeatures.length ; k<klen ; k++ )
					{
						if ( coption == aofeatures[k].cfeature )
						{
							ntmp = aofeatures[k].fninit( osettings );
							if ( ntmp )
							{
								ipushfeature = 1;
							}
							break;
						}
					}
				}
				
				/* add to the 2d features array */
				if ( ipushfeature == 1 && ntmp !== null )
				{
					if ( typeof osettings.aanfeatures[coption] !== 'object' )
					{
						osettings.aanfeatures[coption] = [];
					}
					osettings.aanfeatures[coption].push( ntmp );
					ninsertnode.appendchild( ntmp );
				}
			}
			
			/* built our dom structure - replace the holding div with what we want */
			nholding.parentnode.replacechild( osettings.ntablewrapper, nholding );
		}
		
		
		/**
		 * use the dom source to create up an array of header cells. the idea here is to
		 * create a layout grid (array) of rows x columns, which contains a reference
		 * to the cell that that point in the grid (regardless of col/rowspan), such that
		 * any column / row could be removed and the new grid constructed
		 *  @param array {object} alayout array to store the calculated layout in
		 *  @param {node} nthead the header/footer element for the table
		 *  @memberof datatable#oapi
		 */
		function _fndetectheader ( alayout, nthead )
		{
			var ntrs = $(nthead).children('tr');
			var ntr, ncell;
			var i, k, l, ilen, jlen, icolshifted, icolumn, icolspan, irowspan;
			var bunique;
			var fnshiftcol = function ( a, i, j ) {
				var k = a[i];
		                while ( k[j] ) {
					j++;
				}
				return j;
			};
		
			alayout.splice( 0, alayout.length );
			
			/* we know how many rows there are in the layout - so prep it */
			for ( i=0, ilen=ntrs.length ; i<ilen ; i++ )
			{
				alayout.push( [] );
			}
			
			/* calculate a layout array */
			for ( i=0, ilen=ntrs.length ; i<ilen ; i++ )
			{
				ntr = ntrs[i];
				icolumn = 0;
				
				/* for every cell in the row... */
				ncell = ntr.firstchild;
				while ( ncell ) {
					if ( ncell.nodename.touppercase() == "td" ||
					     ncell.nodename.touppercase() == "th" )
					{
						/* get the col and rowspan attributes from the dom and sanitise them */
						icolspan = ncell.getattribute('colspan') * 1;
						irowspan = ncell.getattribute('rowspan') * 1;
						icolspan = (!icolspan || icolspan===0 || icolspan===1) ? 1 : icolspan;
						irowspan = (!irowspan || irowspan===0 || irowspan===1) ? 1 : irowspan;
		
						/* there might be colspan cells already in this row, so shift our target 
						 * accordingly
						 */
						icolshifted = fnshiftcol( alayout, i, icolumn );
						
						/* cache calculation for unique columns */
						bunique = icolspan === 1 ? true : false;
						
						/* if there is col / rowspan, copy the information into the layout grid */
						for ( l=0 ; l<icolspan ; l++ )
						{
							for ( k=0 ; k<irowspan ; k++ )
							{
								alayout[i+k][icolshifted+l] = {
									"cell": ncell,
									"unique": bunique
								};
								alayout[i+k].ntr = ntr;
							}
						}
					}
					ncell = ncell.nextsibling;
				}
			}
		}
		
		
		/**
		 * get an array of unique th elements, one for each column
		 *  @param {object} osettings datatables settings object
		 *  @param {node} nheader automatically detect the layout from this node - optional
		 *  @param {array} alayout thead/tfoot layout from _fndetectheader - optional
		 *  @returns array {node} areturn list of unique th's
		 *  @memberof datatable#oapi
		 */
		function _fngetuniqueths ( osettings, nheader, alayout )
		{
			var areturn = [];
			if ( !alayout )
			{
				alayout = osettings.aoheader;
				if ( nheader )
				{
					alayout = [];
					_fndetectheader( alayout, nheader );
				}
			}
		
			for ( var i=0, ilen=alayout.length ; i<ilen ; i++ )
			{
				for ( var j=0, jlen=alayout[i].length ; j<jlen ; j++ )
				{
					if ( alayout[i][j].unique && 
						 (!areturn[j] || !osettings.bsortcellstop) )
					{
						areturn[j] = alayout[i][j].cell;
					}
				}
			}
			
			return areturn;
		}
		
		
		
		/**
		 * update the table using an ajax call
		 *  @param {object} osettings datatables settings object
		 *  @returns {boolean} block the table drawing or not
		 *  @memberof datatable#oapi
		 */
		function _fnajaxupdate( osettings )
		{
			if ( osettings.bajaxdataget )
			{
				osettings.idraw++;
				_fnprocessingdisplay( osettings, true );
				var icolumns = osettings.aocolumns.length;
				var aodata = _fnajaxparameters( osettings );
				_fnserverparams( osettings, aodata );
				
				osettings.fnserverdata.call( osettings.oinstance, osettings.sajaxsource, aodata,
					function(json) {
						_fnajaxupdatedraw( osettings, json );
					}, osettings );
				return false;
			}
			else
			{
				return true;
			}
		}
		
		
		/**
		 * build up the parameters in an object needed for a server-side processing request
		 *  @param {object} osettings datatables settings object
		 *  @returns {bool} block the table drawing or not
		 *  @memberof datatable#oapi
		 */
		function _fnajaxparameters( osettings )
		{
			var icolumns = osettings.aocolumns.length;
			var aodata = [], mdataprop, aasort, adatasort;
			var i, j;
			
			aodata.push( { "name": "secho",          "value": osettings.idraw } );
			aodata.push( { "name": "icolumns",       "value": icolumns } );
			aodata.push( { "name": "scolumns",       "value": _fncolumnordering(osettings) } );
			aodata.push( { "name": "idisplaystart",  "value": osettings._idisplaystart } );
			aodata.push( { "name": "idisplaylength", "value": osettings.ofeatures.bpaginate !== false ?
				osettings._idisplaylength : -1 } );
				
			for ( i=0 ; i<icolumns ; i++ )
			{
			  mdataprop = osettings.aocolumns[i].mdata;
				aodata.push( { "name": "mdataprop_"+i, "value": typeof(mdataprop)==="function" ? 'function' : mdataprop } );
			}
			
			/* filtering */
			if ( osettings.ofeatures.bfilter !== false )
			{
				aodata.push( { "name": "ssearch", "value": osettings.oprevioussearch.ssearch } );
				aodata.push( { "name": "bregex",  "value": osettings.oprevioussearch.bregex } );
				for ( i=0 ; i<icolumns ; i++ )
				{
					aodata.push( { "name": "ssearch_"+i,     "value": osettings.aopresearchcols[i].ssearch } );
					aodata.push( { "name": "bregex_"+i,      "value": osettings.aopresearchcols[i].bregex } );
					aodata.push( { "name": "bsearchable_"+i, "value": osettings.aocolumns[i].bsearchable } );
				}
			}
			
			/* sorting */
			if ( osettings.ofeatures.bsort !== false )
			{
				var icounter = 0;
		
				aasort = ( osettings.aasortingfixed !== null ) ?
					osettings.aasortingfixed.concat( osettings.aasorting ) :
					osettings.aasorting.slice();
				
				for ( i=0 ; i<aasort.length ; i++ )
				{
					adatasort = osettings.aocolumns[ aasort[i][0] ].adatasort;
					
					for ( j=0 ; j<adatasort.length ; j++ )
					{
						aodata.push( { "name": "isortcol_"+icounter,  "value": adatasort[j] } );
						aodata.push( { "name": "ssortdir_"+icounter,  "value": aasort[i][1] } );
						icounter++;
					}
				}
				aodata.push( { "name": "isortingcols",   "value": icounter } );
				
				for ( i=0 ; i<icolumns ; i++ )
				{
					aodata.push( { "name": "bsortable_"+i,  "value": osettings.aocolumns[i].bsortable } );
				}
			}
			
			return aodata;
		}
		
		
		/**
		 * add ajax parameters from plug-ins
		 *  @param {object} osettings datatables settings object
		 *  @param array {objects} aodata name/value pairs to send to the server
		 *  @memberof datatable#oapi
		 */
		function _fnserverparams( osettings, aodata )
		{
			_fncallbackfire( osettings, 'aoserverparams', 'serverparams', [aodata] );
		}
		
		
		/**
		 * data the data from the server (nuking the old) and redraw the table
		 *  @param {object} osettings datatables settings object
		 *  @param {object} json json data return from the server.
		 *  @param {string} json.secho tracking flag for datatables to match requests
		 *  @param {int} json.itotalrecords number of records in the data set, not accounting for filtering
		 *  @param {int} json.itotaldisplayrecords number of records in the data set, accounting for filtering
		 *  @param {array} json.aadata the data to display on this page
		 *  @param {string} [json.scolumns] column ordering (sname, comma separated)
		 *  @memberof datatable#oapi
		 */
		function _fnajaxupdatedraw ( osettings, json )
		{
			if ( json.secho !== undefined )
			{
				/* protect against old returns over-writing a new one. possible when you get
				 * very fast interaction, and later queries are completed much faster
				 */
				if ( json.secho*1 < osettings.idraw )
				{
					return;
				}
				else
				{
					osettings.idraw = json.secho * 1;
				}
			}
			
			if ( !osettings.oscroll.binfinite ||
				   (osettings.oscroll.binfinite && (osettings.bsorted || osettings.bfiltered)) )
			{
				_fncleartable( osettings );
			}
			osettings._irecordstotal = parseint(json.itotalrecords, 10);
			osettings._irecordsdisplay = parseint(json.itotaldisplayrecords, 10);
			
			/* determine if reordering is required */
			var sordering = _fncolumnordering(osettings);
			var breorder = (json.scolumns !== undefined && sordering !== "" && json.scolumns != sordering );
			var aiindex;
			if ( breorder )
			{
				aiindex = _fnreorderindex( osettings, json.scolumns );
			}
			
			var adata = _fngetobjectdatafn( osettings.sajaxdataprop )( json );
			for ( var i=0, ilen=adata.length ; i<ilen ; i++ )
			{
				if ( breorder )
				{
					/* if we need to re-order, then create a new array with the correct order and add it */
					var adatasorted = [];
					for ( var j=0, jlen=osettings.aocolumns.length ; j<jlen ; j++ )
					{
						adatasorted.push( adata[i][ aiindex[j] ] );
					}
					_fnadddata( osettings, adatasorted );
				}
				else
				{
					/* no re-order required, sever got it "right" - just straight add */
					_fnadddata( osettings, adata[i] );
				}
			}
			osettings.aidisplay = osettings.aidisplaymaster.slice();
			
			osettings.bajaxdataget = false;
			_fndraw( osettings );
			osettings.bajaxdataget = true;
			_fnprocessingdisplay( osettings, false );
		}
		
		
		
		/**
		 * generate the node required for filtering text
		 *  @returns {node} filter control element
		 *  @param {object} osettings datatables settings object
		 *  @memberof datatable#oapi
		 */
		function _fnfeaturehtmlfilter ( osettings )
		{
			var oprevioussearch = osettings.oprevioussearch;
			
			var ssearchstr = osettings.olanguage.ssearch;
			ssearchstr = (ssearchstr.indexof('_input_') !== -1) ?
			  ssearchstr.replace('_input_', '<input type="text" />') :
			  ssearchstr==="" ? '<input type="text" />' : ssearchstr+' <input type="text" />';
			
			var nfilter = document.createelement( 'div' );
			nfilter.classname = osettings.oclasses.sfilter;
			nfilter.innerhtml = '<label>'+ssearchstr+'</label>';
			if ( !osettings.aanfeatures.f )
			{
				nfilter.id = osettings.stableid+'_filter';
			}
			
			var jqfilter = $('input[type="text"]', nfilter);
		
			// store a reference to the input element, so other input elements could be
			// added to the filter wrapper if needed (submit button for example)
			nfilter._dt_input = jqfilter[0];
		
			jqfilter.val( oprevioussearch.ssearch.replace('"','&quot;') );
			jqfilter.bind( 'keyup.dt', function(e) {
				/* update all other filter input elements for the new display */
				var n = osettings.aanfeatures.f;
				var val = this.value==="" ? "" : this.value; // mental ie8 fix :-(
		
				for ( var i=0, ilen=n.length ; i<ilen ; i++ )
				{
					if ( n[i] != $(this).parents('div.datatables_filter')[0] )
					{
						$(n[i]._dt_input).val( val );
					}
				}
				
				/* now do the filter */
				if ( val != oprevioussearch.ssearch )
				{
					_fnfiltercomplete( osettings, { 
						"ssearch": val, 
						"bregex": oprevioussearch.bregex,
						"bsmart": oprevioussearch.bsmart ,
						"bcaseinsensitive": oprevioussearch.bcaseinsensitive 
					} );
				}
			} );
		
			jqfilter
				.attr('aria-controls', osettings.stableid)
				.bind( 'keypress.dt', function(e) {
					/* prevent form submission */
					if ( e.keycode == 13 )
					{
						return false;
					}
				}
			);
			
			return nfilter;
		}
		
		
		/**
		 * filter the table using both the global filter and column based filtering
		 *  @param {object} osettings datatables settings object
		 *  @param {object} osearch search information
		 *  @param {int} [iforce] force a research of the master array (1) or not (undefined or 0)
		 *  @memberof datatable#oapi
		 */
		function _fnfiltercomplete ( osettings, oinput, iforce )
		{
			var oprevsearch = osettings.oprevioussearch;
			var aoprevsearch = osettings.aopresearchcols;
			var fnsavefilter = function ( ofilter ) {
				/* save the filtering values */
				oprevsearch.ssearch = ofilter.ssearch;
				oprevsearch.bregex = ofilter.bregex;
				oprevsearch.bsmart = ofilter.bsmart;
				oprevsearch.bcaseinsensitive = ofilter.bcaseinsensitive;
			};
		
			/* in server-side processing all filtering is done by the server, so no point hanging around here */
			if ( !osettings.ofeatures.bserverside )
			{
				/* global filter */
				_fnfilter( osettings, oinput.ssearch, iforce, oinput.bregex, oinput.bsmart, oinput.bcaseinsensitive );
				fnsavefilter( oinput );
		
				/* now do the individual column filter */
				for ( var i=0 ; i<osettings.aopresearchcols.length ; i++ )
				{
					_fnfiltercolumn( osettings, aoprevsearch[i].ssearch, i, aoprevsearch[i].bregex, 
						aoprevsearch[i].bsmart, aoprevsearch[i].bcaseinsensitive );
				}
				
				/* custom filtering */
				_fnfiltercustom( osettings );
			}
			else
			{
				fnsavefilter( oinput );
			}
			
			/* tell the draw function we have been filtering */
			osettings.bfiltered = true;
			$(osettings.oinstance).trigger('filter', osettings);
			
			/* redraw the table */
			osettings._idisplaystart = 0;
			_fncalculateend( osettings );
			_fndraw( osettings );
			
			/* rebuild search array 'offline' */
			_fnbuildsearcharray( osettings, 0 );
		}
		
		
		/**
		 * apply custom filtering functions
		 *  @param {object} osettings datatables settings object
		 *  @memberof datatable#oapi
		 */
		function _fnfiltercustom( osettings )
		{
			var afnfilters = datatable.ext.afnfiltering;
			var aifiltercolumns = _fngetcolumns( osettings, 'bsearchable' );
		
			for ( var i=0, ilen=afnfilters.length ; i<ilen ; i++ )
			{
				var icorrector = 0;
				for ( var j=0, jlen=osettings.aidisplay.length ; j<jlen ; j++ )
				{
					var idisindex = osettings.aidisplay[j-icorrector];
					var btest = afnfilters[i](
						osettings,
						_fngetrowdata( osettings, idisindex, 'filter', aifiltercolumns ),
						idisindex
					);
					
					/* check if we should use this row based on the filtering function */
					if ( !btest )
					{
						osettings.aidisplay.splice( j-icorrector, 1 );
						icorrector++;
					}
				}
			}
		}
		
		
		/**
		 * filter the table on a per-column basis
		 *  @param {object} osettings datatables settings object
		 *  @param {string} sinput string to filter on
		 *  @param {int} icolumn column to filter
		 *  @param {bool} bregex treat search string as a regular expression or not
		 *  @param {bool} bsmart use smart filtering or not
		 *  @param {bool} bcaseinsensitive do case insenstive matching or not
		 *  @memberof datatable#oapi
		 */
		function _fnfiltercolumn ( osettings, sinput, icolumn, bregex, bsmart, bcaseinsensitive )
		{
			if ( sinput === "" )
			{
				return;
			}
			
			var iindexcorrector = 0;
			var rpsearch = _fnfiltercreatesearch( sinput, bregex, bsmart, bcaseinsensitive );
			
			for ( var i=osettings.aidisplay.length-1 ; i>=0 ; i-- )
			{
				var sdata = _fndatatosearch( _fngetcelldata( osettings, osettings.aidisplay[i], icolumn, 'filter' ),
					osettings.aocolumns[icolumn].stype );
				if ( ! rpsearch.test( sdata ) )
				{
					osettings.aidisplay.splice( i, 1 );
					iindexcorrector++;
				}
			}
		}
		
		
		/**
		 * filter the data table based on user input and draw the table
		 *  @param {object} osettings datatables settings object
		 *  @param {string} sinput string to filter on
		 *  @param {int} iforce optional - force a research of the master array (1) or not (undefined or 0)
		 *  @param {bool} bregex treat as a regular expression or not
		 *  @param {bool} bsmart perform smart filtering or not
		 *  @param {bool} bcaseinsensitive do case insenstive matching or not
		 *  @memberof datatable#oapi
		 */
		function _fnfilter( osettings, sinput, iforce, bregex, bsmart, bcaseinsensitive )
		{
			var i;
			var rpsearch = _fnfiltercreatesearch( sinput, bregex, bsmart, bcaseinsensitive );
			var oprevsearch = osettings.oprevioussearch;
			
			/* check if we are forcing or not - optional parameter */
			if ( !iforce )
			{
				iforce = 0;
			}
			
			/* need to take account of custom filtering functions - always filter */
			if ( datatable.ext.afnfiltering.length !== 0 )
			{
				iforce = 1;
			}
			
			/*
			 * if the input is blank - we want the full data set
			 */
			if ( sinput.length <= 0 )
			{
				osettings.aidisplay.splice( 0, osettings.aidisplay.length);
				osettings.aidisplay = osettings.aidisplaymaster.slice();
			}
			else
			{
				/*
				 * we are starting a new search or the new search string is smaller 
				 * then the old one (i.e. delete). search from the master array
			 	 */
				if ( osettings.aidisplay.length == osettings.aidisplaymaster.length ||
					   oprevsearch.ssearch.length > sinput.length || iforce == 1 ||
					   sinput.indexof(oprevsearch.ssearch) !== 0 )
				{
					/* nuke the old display array - we are going to rebuild it */
					osettings.aidisplay.splice( 0, osettings.aidisplay.length);
					
					/* force a rebuild of the search array */
					_fnbuildsearcharray( osettings, 1 );
					
					/* search through all records to populate the search array
					 * the the osettings.aidisplaymaster and asdatasearch arrays have 1 to 1 
					 * mapping
					 */
					for ( i=0 ; i<osettings.aidisplaymaster.length ; i++ )
					{
						if ( rpsearch.test(osettings.asdatasearch[i]) )
						{
							osettings.aidisplay.push( osettings.aidisplaymaster[i] );
						}
					}
			  }
			  else
				{
			  	/* using old search array - refine it - do it this way for speed
			  	 * don't have to search the whole master array again
					 */
			  	var iindexcorrector = 0;
			  	
			  	/* search the current results */
			  	for ( i=0 ; i<osettings.asdatasearch.length ; i++ )
					{
			  		if ( ! rpsearch.test(osettings.asdatasearch[i]) )
						{
			  			osettings.aidisplay.splice( i-iindexcorrector, 1 );
			  			iindexcorrector++;
			  		}
			  	}
			  }
			}
		}
		
		
		/**
		 * create an array which can be quickly search through
		 *  @param {object} osettings datatables settings object
		 *  @param {int} imaster use the master data array - optional
		 *  @memberof datatable#oapi
		 */
		function _fnbuildsearcharray ( osettings, imaster )
		{
			if ( !osettings.ofeatures.bserverside )
			{
				/* clear out the old data */
				osettings.asdatasearch = [];
		
				var aifiltercolumns = _fngetcolumns( osettings, 'bsearchable' );
				var aiindex = (imaster===1) ?
				 	osettings.aidisplaymaster :
				 	osettings.aidisplay;
				
				for ( var i=0, ilen=aiindex.length ; i<ilen ; i++ )
				{
					osettings.asdatasearch[i] = _fnbuildsearchrow(
						osettings,
						_fngetrowdata( osettings, aiindex[i], 'filter', aifiltercolumns )
					);
				}
			}
		}
		
		
		/**
		 * create a searchable string from a single data row
		 *  @param {object} osettings datatables settings object
		 *  @param {array} adata row data array to use for the data to search
		 *  @memberof datatable#oapi
		 */
		function _fnbuildsearchrow( osettings, adata )
		{
			var ssearch = adata.join('  ');
			
			/* if it looks like there is an html entity in the string, attempt to decode it */
			if ( ssearch.indexof('&') !== -1 )
			{
				ssearch = $('<div>').html(ssearch).text();
			}
			
			// strip newline characters
			return ssearch.replace( /[\n\r]/g, " " );
		}
		
		/**
		 * build a regular expression object suitable for searching a table
		 *  @param {string} ssearch string to search for
		 *  @param {bool} bregex treat as a regular expression or not
		 *  @param {bool} bsmart perform smart filtering or not
		 *  @param {bool} bcaseinsensitive do case insensitive matching or not
		 *  @returns {regexp} constructed object
		 *  @memberof datatable#oapi
		 */
		function _fnfiltercreatesearch( ssearch, bregex, bsmart, bcaseinsensitive )
		{
			var assearch, sregexpstring;
			
			if ( bsmart )
			{
				/* generate the regular expression to use. something along the lines of:
				 * ^(?=.*?\bone\b)(?=.*?\btwo\b)(?=.*?\bthree\b).*$
				 */
				assearch = bregex ? ssearch.split( ' ' ) : _fnescaperegex( ssearch ).split( ' ' );
				sregexpstring = '^(?=.*?'+assearch.join( ')(?=.*?' )+').*$';
				return new regexp( sregexpstring, bcaseinsensitive ? "i" : "" );
			}
			else
			{
				ssearch = bregex ? ssearch : _fnescaperegex( ssearch );
				return new regexp( ssearch, bcaseinsensitive ? "i" : "" );
			}
		}
		
		
		/**
		 * convert raw data into something that the user can search on
		 *  @param {string} sdata data to be modified
		 *  @param {string} stype data type
		 *  @returns {string} search string
		 *  @memberof datatable#oapi
		 */
		function _fndatatosearch ( sdata, stype )
		{
			if ( typeof datatable.ext.ofnsearch[stype] === "function" )
			{
				return datatable.ext.ofnsearch[stype]( sdata );
			}
			else if ( sdata === null )
			{
				return '';
			}
			else if ( stype == "html" )
			{
				return sdata.replace(/[\r\n]/g," ").replace( /<.*?>/g, "" );
			}
			else if ( typeof sdata === "string" )
			{
				return sdata.replace(/[\r\n]/g," ");
			}
			return sdata;
		}
		
		
		/**
		 * scape a string such that it can be used in a regular expression
		 *  @param {string} sval string to escape
		 *  @returns {string} escaped string
		 *  @memberof datatable#oapi
		 */
		function _fnescaperegex ( sval )
		{
			var acescape = [ '/', '.', '*', '+', '?', '|', '(', ')', '[', ']', '{', '}', '\\', '$', '^', '-' ];
			var rereplace = new regexp( '(\\' + acescape.join('|\\') + ')', 'g' );
			return sval.replace(rereplace, '\\$1');
		}
		
		
		/**
		 * generate the node required for the info display
		 *  @param {object} osettings datatables settings object
		 *  @returns {node} information element
		 *  @memberof datatable#oapi
		 */
		function _fnfeaturehtmlinfo ( osettings )
		{
			var ninfo = document.createelement( 'div' );
			ninfo.classname = osettings.oclasses.sinfo;
			
			/* actions that are to be taken once only for this feature */
			if ( !osettings.aanfeatures.i )
			{
				/* add draw callback */
				osettings.aodrawcallback.push( {
					"fn": _fnupdateinfo,
					"sname": "information"
				} );
				
				/* add id */
				ninfo.id = osettings.stableid+'_info';
			}
			osettings.ntable.setattribute( 'aria-describedby', osettings.stableid+'_info' );
			
			return ninfo;
		}
		
		
		/**
		 * update the information elements in the display
		 *  @param {object} osettings datatables settings object
		 *  @memberof datatable#oapi
		 */
		function _fnupdateinfo ( osettings )
		{
			/* show information about the table */
			if ( !osettings.ofeatures.binfo || osettings.aanfeatures.i.length === 0 )
			{
				return;
			}
			
			var
				olang = osettings.olanguage,
				istart = osettings._idisplaystart+1,
				iend = osettings.fndisplayend(),
				imax = osettings.fnrecordstotal(),
				itotal = osettings.fnrecordsdisplay(),
				sout;
			
			if ( itotal === 0 )
			{
				/* empty record set */
				sout = olang.sinfoempty;
			}
			else {
				/* normal record set */
				sout = olang.sinfo;
			}
		
			if ( itotal != imax )
			{
				/* record set after filtering */
				sout += ' ' + olang.sinfofiltered;
			}
		
			// convert the macros
			sout += olang.sinfopostfix;
			sout = _fninfomacros( osettings, sout );
			
			if ( olang.fninfocallback !== null )
			{
				sout = olang.fninfocallback.call( osettings.oinstance, 
					osettings, istart, iend, imax, itotal, sout );
			}
			
			var n = osettings.aanfeatures.i;
			for ( var i=0, ilen=n.length ; i<ilen ; i++ )
			{
				$(n[i]).html( sout );
			}
		}
		
		
		function _fninfomacros ( osettings, str )
		{
			var
				istart = osettings._idisplaystart+1,
				sstart = osettings.fnformatnumber( istart ),
				iend = osettings.fndisplayend(),
				send = osettings.fnformatnumber( iend ),
				itotal = osettings.fnrecordsdisplay(),
				stotal = osettings.fnformatnumber( itotal ),
				imax = osettings.fnrecordstotal(),
				smax = osettings.fnformatnumber( imax );
		
			// when infinite scrolling, we are always starting at 1. _idisplaystart is used only
			// internally
			if ( osettings.oscroll.binfinite )
			{
				sstart = osettings.fnformatnumber( 1 );
			}
		
			return str.
				replace(/_start_/g, sstart).
				replace(/_end_/g,   send).
				replace(/_total_/g, stotal).
				replace(/_max_/g,   smax);
		}
		
		
		
		/**
		 * draw the table for the first time, adding all required features
		 *  @param {object} osettings datatables settings object
		 *  @memberof datatable#oapi
		 */
		function _fninitialise ( osettings )
		{
			var i, ilen, iajaxstart=osettings.iinitdisplaystart;
			
			/* ensure that the table data is fully initialised */
			if ( osettings.binitialised === false )
			{
				settimeout( function(){ _fninitialise( osettings ); }, 200 );
				return;
			}
			
			/* show the display html options */
			_fnaddoptionshtml( osettings );
			
			/* build and draw the header / footer for the table */
			_fnbuildhead( osettings );
			_fndrawhead( osettings, osettings.aoheader );
			if ( osettings.ntfoot )
			{
				_fndrawhead( osettings, osettings.aofooter );
			}
		
			/* okay to show that something is going on now */
			_fnprocessingdisplay( osettings, true );
			
			/* calculate sizes for columns */
			if ( osettings.ofeatures.bautowidth )
			{
				_fncalculatecolumnwidths( osettings );
			}
			
			for ( i=0, ilen=osettings.aocolumns.length ; i<ilen ; i++ )
			{
				if ( osettings.aocolumns[i].swidth !== null )
				{
					osettings.aocolumns[i].nth.style.width = _fnstringtocss( osettings.aocolumns[i].swidth );
				}
			}
			
			/* if there is default sorting required - let's do it. the sort function will do the
			 * drawing for us. otherwise we draw the table regardless of the ajax source - this allows
			 * the table to look initialised for ajax sourcing data (show 'loading' message possibly)
			 */
			if ( osettings.ofeatures.bsort )
			{
				_fnsort( osettings );
			}
			else if ( osettings.ofeatures.bfilter )
			{
				_fnfiltercomplete( osettings, osettings.oprevioussearch );
			}
			else
			{
				osettings.aidisplay = osettings.aidisplaymaster.slice();
				_fncalculateend( osettings );
				_fndraw( osettings );
			}
			
			/* if there is an ajax source load the data */
			if ( osettings.sajaxsource !== null && !osettings.ofeatures.bserverside )
			{
				var aodata = [];
				_fnserverparams( osettings, aodata );
				osettings.fnserverdata.call( osettings.oinstance, osettings.sajaxsource, aodata, function(json) {
					var adata = (osettings.sajaxdataprop !== "") ?
					 	_fngetobjectdatafn( osettings.sajaxdataprop )(json) : json;
		
					/* got the data - add it to the table */
					for ( i=0 ; i<adata.length ; i++ )
					{
						_fnadddata( osettings, adata[i] );
					}
					
					/* reset the init display for cookie saving. we've already done a filter, and
					 * therefore cleared it before. so we need to make it appear 'fresh'
					 */
					osettings.iinitdisplaystart = iajaxstart;
					
					if ( osettings.ofeatures.bsort )
					{
						_fnsort( osettings );
					}
					else
					{
						osettings.aidisplay = osettings.aidisplaymaster.slice();
						_fncalculateend( osettings );
						_fndraw( osettings );
					}
					
					_fnprocessingdisplay( osettings, false );
					_fninitcomplete( osettings, json );
				}, osettings );
				return;
			}
			
			/* server-side processing initialisation complete is done at the end of _fndraw */
			if ( !osettings.ofeatures.bserverside )
			{
				_fnprocessingdisplay( osettings, false );
				_fninitcomplete( osettings );
			}
		}
		
		
		/**
		 * draw the table for the first time, adding all required features
		 *  @param {object} osettings datatables settings object
		 *  @param {object} [json] json from the server that completed the table, if using ajax source
		 *    with client-side processing (optional)
		 *  @memberof datatable#oapi
		 */
		function _fninitcomplete ( osettings, json )
		{
			osettings._binitcomplete = true;
			_fncallbackfire( osettings, 'aoinitcomplete', 'init', [osettings, json] );
		}
		
		
		/**
		 * language compatibility - when certain options are given, and others aren't, we
		 * need to duplicate the values over, in order to provide backwards compatibility
		 * with older language files.
		 *  @param {object} osettings datatables settings object
		 *  @memberof datatable#oapi
		 */
		function _fnlanguagecompat( olanguage )
		{
			var odefaults = datatable.defaults.olanguage;
		
			/* backwards compatibility - if there is no semptytable given, then use the same as
			 * szerorecords - assuming that is given.
			 */
			if ( !olanguage.semptytable && olanguage.szerorecords &&
				odefaults.semptytable === "no data available in table" )
			{
				_fnmap( olanguage, olanguage, 'szerorecords', 'semptytable' );
			}
		
			/* likewise with loading records */
			if ( !olanguage.sloadingrecords && olanguage.szerorecords &&
				odefaults.sloadingrecords === "loading..." )
			{
				_fnmap( olanguage, olanguage, 'szerorecords', 'sloadingrecords' );
			}
		}
		
		
		
		/**
		 * generate the node required for user display length changing
		 *  @param {object} osettings datatables settings object
		 *  @returns {node} display length feature node
		 *  @memberof datatable#oapi
		 */
		function _fnfeaturehtmllength ( osettings )
		{
			if ( osettings.oscroll.binfinite )
			{
				return null;
			}
			
			/* this can be overruled by not using the _menu_ var/macro in the language variable */
			var sname = 'name="'+osettings.stableid+'_length"';
			var sstdmenu = '<select size="1" '+sname+'>';
			var i, ilen;
			var alengthmenu = osettings.alengthmenu;
			
			if ( alengthmenu.length == 2 && typeof alengthmenu[0] === 'object' && 
					typeof alengthmenu[1] === 'object' )
			{
				for ( i=0, ilen=alengthmenu[0].length ; i<ilen ; i++ )
				{
					sstdmenu += '<option value="'+alengthmenu[0][i]+'">'+alengthmenu[1][i]+'</option>';
				}
			}
			else
			{
				for ( i=0, ilen=alengthmenu.length ; i<ilen ; i++ )
				{
					sstdmenu += '<option value="'+alengthmenu[i]+'">'+alengthmenu[i]+'</option>';
				}
			}
			sstdmenu += '</select>';
			
			var nlength = document.createelement( 'div' );
			if ( !osettings.aanfeatures.l )
			{
				nlength.id = osettings.stableid+'_length';
			}
			nlength.classname = osettings.oclasses.slength;
			nlength.innerhtml = '<label>'+osettings.olanguage.slengthmenu.replace( '_menu_', sstdmenu )+'</label>';
			
			/*
			 * set the length to the current display length - thanks to andrea pavlovic for this fix,
			 * and stefan skopnik for fixing the fix!
			 */
			$('select option[value="'+osettings._idisplaylength+'"]', nlength).attr("selected", true);
			
			$('select', nlength).bind( 'change.dt', function(e) {
				var ival = $(this).val();
				
				/* update all other length options for the new display */
				var n = osettings.aanfeatures.l;
				for ( i=0, ilen=n.length ; i<ilen ; i++ )
				{
					if ( n[i] != this.parentnode )
					{
						$('select', n[i]).val( ival );
					}
				}
				
				/* redraw the table */
				osettings._idisplaylength = parseint(ival, 10);
				_fncalculateend( osettings );
				
				/* if we have space to show extra rows (backing up from the end point - then do so */
				if ( osettings.fndisplayend() == osettings.fnrecordsdisplay() )
				{
					osettings._idisplaystart = osettings.fndisplayend() - osettings._idisplaylength;
					if ( osettings._idisplaystart < 0 )
					{
						osettings._idisplaystart = 0;
					}
				}
				
				if ( osettings._idisplaylength == -1 )
				{
					osettings._idisplaystart = 0;
				}
				
				_fndraw( osettings );
			} );
		
		
			$('select', nlength).attr('aria-controls', osettings.stableid);
			
			return nlength;
		}
		
		
		/**
		 * recalculate the end point based on the start point
		 *  @param {object} osettings datatables settings object
		 *  @memberof datatable#oapi
		 */
		function _fncalculateend( osettings )
		{
			if ( osettings.ofeatures.bpaginate === false )
			{
				osettings._idisplayend = osettings.aidisplay.length;
			}
			else
			{
				/* set the end point of the display - based on how many elements there are
				 * still to display
				 */
				if ( osettings._idisplaystart + osettings._idisplaylength > osettings.aidisplay.length ||
					   osettings._idisplaylength == -1 )
				{
					osettings._idisplayend = osettings.aidisplay.length;
				}
				else
				{
					osettings._idisplayend = osettings._idisplaystart + osettings._idisplaylength;
				}
			}
		}
		
		
		
		/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
		 * note that most of the paging logic is done in 
		 * datatable.ext.opagination
		 */
		
		/**
		 * generate the node required for default pagination
		 *  @param {object} osettings datatables settings object
		 *  @returns {node} pagination feature node
		 *  @memberof datatable#oapi
		 */
		function _fnfeaturehtmlpaginate ( osettings )
		{
			if ( osettings.oscroll.binfinite )
			{
				return null;
			}
			
			var npaginate = document.createelement( 'div' );
			npaginate.classname = osettings.oclasses.spaging+osettings.spaginationtype;
			
			datatable.ext.opagination[ osettings.spaginationtype ].fninit( osettings, npaginate, 
				function( osettings ) {
					_fncalculateend( osettings );
					_fndraw( osettings );
				}
			);
			
			/* add a draw callback for the pagination on first instance, to update the paging display */
			if ( !osettings.aanfeatures.p )
			{
				osettings.aodrawcallback.push( {
					"fn": function( osettings ) {
						datatable.ext.opagination[ osettings.spaginationtype ].fnupdate( osettings, function( osettings ) {
							_fncalculateend( osettings );
							_fndraw( osettings );
						} );
					},
					"sname": "pagination"
				} );
			}
			return npaginate;
		}
		
		
		/**
		 * alter the display settings to change the page
		 *  @param {object} osettings datatables settings object
		 *  @param {string|int} maction paging action to take: "first", "previous", "next" or "last"
		 *    or page number to jump to (integer)
		 *  @returns {bool} true page has changed, false - no change (no effect) eg 'first' on page 1
		 *  @memberof datatable#oapi
		 */
		function _fnpagechange ( osettings, maction )
		{
			var ioldstart = osettings._idisplaystart;
			
			if ( typeof maction === "number" )
			{
				osettings._idisplaystart = maction * osettings._idisplaylength;
				if ( osettings._idisplaystart > osettings.fnrecordsdisplay() )
				{
					osettings._idisplaystart = 0;
				}
			}
			else if ( maction == "first" )
			{
				osettings._idisplaystart = 0;
			}
			else if ( maction == "previous" )
			{
				osettings._idisplaystart = osettings._idisplaylength>=0 ?
					osettings._idisplaystart - osettings._idisplaylength :
					0;
				
				/* correct for under-run */
				if ( osettings._idisplaystart < 0 )
				{
				  osettings._idisplaystart = 0;
				}
			}
			else if ( maction == "next" )
			{
				if ( osettings._idisplaylength >= 0 )
				{
					/* make sure we are not over running the display array */
					if ( osettings._idisplaystart + osettings._idisplaylength < osettings.fnrecordsdisplay() )
					{
						osettings._idisplaystart += osettings._idisplaylength;
					}
				}
				else
				{
					osettings._idisplaystart = 0;
				}
			}
			else if ( maction == "last" )
			{
				if ( osettings._idisplaylength >= 0 )
				{
					var ipages = parseint( (osettings.fnrecordsdisplay()-1) / osettings._idisplaylength, 10 ) + 1;
					osettings._idisplaystart = (ipages-1) * osettings._idisplaylength;
				}
				else
				{
					osettings._idisplaystart = 0;
				}
			}
			else
			{
				_fnlog( osettings, 0, "unknown paging action: "+maction );
			}
			$(osettings.oinstance).trigger('page', osettings);
			
			return ioldstart != osettings._idisplaystart;
		}
		
		
		
		/**
		 * generate the node required for the processing node
		 *  @param {object} osettings datatables settings object
		 *  @returns {node} processing element
		 *  @memberof datatable#oapi
		 */
		function _fnfeaturehtmlprocessing ( osettings )
		{
			var nprocessing = document.createelement( 'div' );
			
			if ( !osettings.aanfeatures.r )
			{
				nprocessing.id = osettings.stableid+'_processing';
			}
			nprocessing.innerhtml = osettings.olanguage.sprocessing;
			nprocessing.classname = osettings.oclasses.sprocessing;
			osettings.ntable.parentnode.insertbefore( nprocessing, osettings.ntable );
			
			return nprocessing;
		}
		
		
		/**
		 * display or hide the processing indicator
		 *  @param {object} osettings datatables settings object
		 *  @param {bool} bshow show the processing indicator (true) or not (false)
		 *  @memberof datatable#oapi
		 */
		function _fnprocessingdisplay ( osettings, bshow )
		{
			if ( osettings.ofeatures.bprocessing )
			{
				var an = osettings.aanfeatures.r;
				for ( var i=0, ilen=an.length ; i<ilen ; i++ )
				{
					an[i].style.visibility = bshow ? "visible" : "hidden";
				}
			}
		
			$(osettings.oinstance).trigger('processing', [osettings, bshow]);
		}
		
		/**
		 * add any control elements for the table - specifically scrolling
		 *  @param {object} osettings datatables settings object
		 *  @returns {node} node to add to the dom
		 *  @memberof datatable#oapi
		 */
		function _fnfeaturehtmltable ( osettings )
		{
			/* check if scrolling is enabled or not - if not then leave the dom unaltered */
			if ( osettings.oscroll.sx === "" && osettings.oscroll.sy === "" )
			{
				return osettings.ntable;
			}
			
			/*
			 * the html structure that we want to generate in this function is:
			 *  div - nscroller
			 *    div - nscrollhead
			 *      div - nscrollheadinner
			 *        table - nscrollheadtable
			 *          thead - nthead
			 *    div - nscrollbody
			 *      table - osettings.ntable
			 *        thead - ntheadsize
			 *        tbody - ntbody
			 *    div - nscrollfoot
			 *      div - nscrollfootinner
			 *        table - nscrollfoottable
			 *          tfoot - ntfoot
			 */
			var
			 	nscroller = document.createelement('div'),
			 	nscrollhead = document.createelement('div'),
			 	nscrollheadinner = document.createelement('div'),
			 	nscrollbody = document.createelement('div'),
			 	nscrollfoot = document.createelement('div'),
			 	nscrollfootinner = document.createelement('div'),
			 	nscrollheadtable = osettings.ntable.clonenode(false),
			 	nscrollfoottable = osettings.ntable.clonenode(false),
				nthead = osettings.ntable.getelementsbytagname('thead')[0],
			 	ntfoot = osettings.ntable.getelementsbytagname('tfoot').length === 0 ? null : 
					osettings.ntable.getelementsbytagname('tfoot')[0],
				oclasses = osettings.oclasses;
			
			nscrollhead.appendchild( nscrollheadinner );
			nscrollfoot.appendchild( nscrollfootinner );
			nscrollbody.appendchild( osettings.ntable );
			nscroller.appendchild( nscrollhead );
			nscroller.appendchild( nscrollbody );
			nscrollheadinner.appendchild( nscrollheadtable );
			nscrollheadtable.appendchild( nthead );
			if ( ntfoot !== null )
			{
				nscroller.appendchild( nscrollfoot );
				nscrollfootinner.appendchild( nscrollfoottable );
				nscrollfoottable.appendchild( ntfoot );
			}
			
			nscroller.classname = oclasses.sscrollwrapper;
			nscrollhead.classname = oclasses.sscrollhead;
			nscrollheadinner.classname = oclasses.sscrollheadinner;
			nscrollbody.classname = oclasses.sscrollbody;
			nscrollfoot.classname = oclasses.sscrollfoot;
			nscrollfootinner.classname = oclasses.sscrollfootinner;
			
			if ( osettings.oscroll.bautocss )
			{
				nscrollhead.style.overflow = "hidden";
				nscrollhead.style.position = "relative";
				nscrollfoot.style.overflow = "hidden";
				nscrollbody.style.overflow = "auto";
			}
			
			nscrollhead.style.border = "0";
			nscrollhead.style.width = "100%";
			nscrollfoot.style.border = "0";
			nscrollheadinner.style.width = osettings.oscroll.sxinner !== "" ?
				osettings.oscroll.sxinner : "100%"; /* will be overwritten */
			
			/* modify attributes to respect the clones */
			nscrollheadtable.removeattribute('id');
			nscrollheadtable.style.marginleft = "0";
			osettings.ntable.style.marginleft = "0";
			if ( ntfoot !== null )
			{
				nscrollfoottable.removeattribute('id');
				nscrollfoottable.style.marginleft = "0";
			}
			
			/* move caption elements from the body to the header, footer or leave where it is
			 * depending on the configuration. note that the dtd says there can be only one caption */
			var ncaption = $(osettings.ntable).children('caption');
			if ( ncaption.length > 0 )
			{
				ncaption = ncaption[0];
				if ( ncaption._captionside === "top" )
				{
					nscrollheadtable.appendchild( ncaption );
				}
				else if ( ncaption._captionside === "bottom" && ntfoot )
				{
					nscrollfoottable.appendchild( ncaption );
				}
			}
			
			/*
			 * sizing
			 */
			/* when x-scrolling add the width and a scroller to move the header with the body */
			if ( osettings.oscroll.sx !== "" )
			{
				nscrollhead.style.width = _fnstringtocss( osettings.oscroll.sx );
				nscrollbody.style.width = _fnstringtocss( osettings.oscroll.sx );
				
				if ( ntfoot !== null )
				{
					nscrollfoot.style.width = _fnstringtocss( osettings.oscroll.sx );	
				}
				
				/* when the body is scrolled, then we also want to scroll the headers */
				$(nscrollbody).scroll( function (e) {
					nscrollhead.scrollleft = this.scrollleft;
					
					if ( ntfoot !== null )
					{
						nscrollfoot.scrollleft = this.scrollleft;
					}
				} );
			}
			
			/* when yscrolling, add the height */
			if ( osettings.oscroll.sy !== "" )
			{
				nscrollbody.style.height = _fnstringtocss( osettings.oscroll.sy );
			}
			
			/* redraw - align columns across the tables */
			osettings.aodrawcallback.push( {
				"fn": _fnscrolldraw,
				"sname": "scrolling"
			} );
			
			/* infinite scrolling event handlers */
			if ( osettings.oscroll.binfinite )
			{
				$(nscrollbody).scroll( function() {
					/* use a blocker to stop scrolling from loading more data while other data is still loading */
					if ( !osettings.bdrawing && $(this).scrolltop() !== 0 )
					{
						/* check if we should load the next data set */
						if ( $(this).scrolltop() + $(this).height() > 
							$(osettings.ntable).height() - osettings.oscroll.iloadgap )
						{
							/* only do the redraw if we have to - we might be at the end of the data */
							if ( osettings.fndisplayend() < osettings.fnrecordsdisplay() )
							{
								_fnpagechange( osettings, 'next' );
								_fncalculateend( osettings );
								_fndraw( osettings );
							}
						}
					}
				} );
			}
			
			osettings.nscrollhead = nscrollhead;
			osettings.nscrollfoot = nscrollfoot;
			
			return nscroller;
		}
		
		
		/**
		 * update the various tables for resizing. it's a bit of a pig this function, but
		 * basically the idea to:
		 *   1. re-create the table inside the scrolling div
		 *   2. take live measurements from the dom
		 *   3. apply the measurements
		 *   4. clean up
		 *  @param {object} o datatables settings object
		 *  @returns {node} node to add to the dom
		 *  @memberof datatable#oapi
		 */
		function _fnscrolldraw ( o )
		{
			var
				nscrollheadinner = o.nscrollhead.getelementsbytagname('div')[0],
				nscrollheadtable = nscrollheadinner.getelementsbytagname('table')[0],
				nscrollbody = o.ntable.parentnode,
				i, ilen, j, jlen, anheadtosize, anheadsizers, anfootsizers, anfoottosize, ostyle, ivis,
				ntheadsize, ntfootsize,
				iwidth, aapplied=[], aappliedfooter=[], isanitywidth,
				nscrollfootinner = (o.ntfoot !== null) ? o.nscrollfoot.getelementsbytagname('div')[0] : null,
				nscrollfoottable = (o.ntfoot !== null) ? nscrollfootinner.getelementsbytagname('table')[0] : null,
				ie67 = o.obrowser.bscrolloversize,
				zeroout = function(nsizer) {
					ostyle = nsizer.style;
					ostyle.paddingtop = "0";
					ostyle.paddingbottom = "0";
					ostyle.bordertopwidth = "0";
					ostyle.borderbottomwidth = "0";
					ostyle.height = 0;
				};
			
			/*
			 * 1. re-create the table inside the scrolling div
			 */
			
			/* remove the old minimised thead and tfoot elements in the inner table */
			$(o.ntable).children('thead, tfoot').remove();
		
			/* clone the current header and footer elements and then place it into the inner table */
			ntheadsize = $(o.nthead).clone()[0];
			o.ntable.insertbefore( ntheadsize, o.ntable.childnodes[0] );
			anheadtosize = o.nthead.getelementsbytagname('tr');
			anheadsizers = ntheadsize.getelementsbytagname('tr');
			
			if ( o.ntfoot !== null )
			{
				ntfootsize = $(o.ntfoot).clone()[0];
				o.ntable.insertbefore( ntfootsize, o.ntable.childnodes[1] );
				anfoottosize = o.ntfoot.getelementsbytagname('tr');
				anfootsizers = ntfootsize.getelementsbytagname('tr');
			}
			
			/*
			 * 2. take live measurements from the dom - do not alter the dom itself!
			 */
			
			/* remove old sizing and apply the calculated column widths
			 * get the unique column headers in the newly created (cloned) header. we want to apply the
			 * calculated sizes to this header
			 */
			if ( o.oscroll.sx === "" )
			{
				nscrollbody.style.width = '100%';
				nscrollheadinner.parentnode.style.width = '100%';
			}
			
			var nths = _fngetuniqueths( o, ntheadsize );
			for ( i=0, ilen=nths.length ; i<ilen ; i++ )
			{
				ivis = _fnvisibletocolumnindex( o, i );
				nths[i].style.width = o.aocolumns[ivis].swidth;
			}
			
			if ( o.ntfoot !== null )
			{
				_fnapplytochildren( function(n) {
					n.style.width = "";
				}, anfootsizers );
			}
		
			// if scroll collapse is enabled, when we put the headers back into the body for sizing, we
			// will end up forcing the scrollbar to appear, making our measurements wrong for when we
			// then hide it (end of this function), so add the header height to the body scroller.
			if ( o.oscroll.bcollapse && o.oscroll.sy !== "" )
			{
				nscrollbody.style.height = (nscrollbody.offsetheight + o.nthead.offsetheight)+"px";
			}
			
			/* size the table as a whole */
			isanitywidth = $(o.ntable).outerwidth();
			if ( o.oscroll.sx === "" )
			{
				/* no x scrolling */
				o.ntable.style.width = "100%";
				
				/* i know this is rubbish - but ie7 will make the width of the table when 100% include
				 * the scrollbar - which is shouldn't. when there is a scrollbar we need to take this
				 * into account.
				 */
				if ( ie67 && ($('tbody', nscrollbody).height() > nscrollbody.offsetheight || 
					$(nscrollbody).css('overflow-y') == "scroll")  )
				{
					o.ntable.style.width = _fnstringtocss( $(o.ntable).outerwidth() - o.oscroll.ibarwidth);
				}
			}
			else
			{
				if ( o.oscroll.sxinner !== "" )
				{
					/* x scroll inner has been given - use it */
					o.ntable.style.width = _fnstringtocss(o.oscroll.sxinner);
				}
				else if ( isanitywidth == $(nscrollbody).width() &&
				   $(nscrollbody).height() < $(o.ntable).height() )
				{
					/* there is y-scrolling - try to take account of the y scroll bar */
					o.ntable.style.width = _fnstringtocss( isanitywidth-o.oscroll.ibarwidth );
					if ( $(o.ntable).outerwidth() > isanitywidth-o.oscroll.ibarwidth )
					{
						/* not possible to take account of it */
						o.ntable.style.width = _fnstringtocss( isanitywidth );
					}
				}
				else
				{
					/* all else fails */
					o.ntable.style.width = _fnstringtocss( isanitywidth );
				}
			}
			
			/* recalculate the sanity width - now that we've applied the required width, before it was
			 * a temporary variable. this is required because the column width calculation is done
			 * before this table dom is created.
			 */
			isanitywidth = $(o.ntable).outerwidth();
			
			/* we want the hidden header to have zero height, so remove padding and borders. then
			 * set the width based on the real headers
			 */
			
			// apply all styles in one pass. invalidates layout only once because we don't read any 
			// dom properties.
			_fnapplytochildren( zeroout, anheadsizers );
			 
			// read all widths in next pass. forces layout only once because we do not change 
			// any dom properties.
			_fnapplytochildren( function(nsizer) {
				aapplied.push( _fnstringtocss( $(nsizer).width() ) );
			}, anheadsizers );
			 
			// apply all widths in final pass. invalidates layout only once because we do not
			// read any dom properties.
			_fnapplytochildren( function(ntosize, i) {
				ntosize.style.width = aapplied[i];
			}, anheadtosize );
		
			$(anheadsizers).height(0);
			
			/* same again with the footer if we have one */
			if ( o.ntfoot !== null )
			{
				_fnapplytochildren( zeroout, anfootsizers );
				 
				_fnapplytochildren( function(nsizer) {
					aappliedfooter.push( _fnstringtocss( $(nsizer).width() ) );
				}, anfootsizers );
				 
				_fnapplytochildren( function(ntosize, i) {
					ntosize.style.width = aappliedfooter[i];
				}, anfoottosize );
		
				$(anfootsizers).height(0);
			}
			
			/*
			 * 3. apply the measurements
			 */
			
			/* "hide" the header and footer that we used for the sizing. we want to also fix their width
			 * to what they currently are
			 */
			_fnapplytochildren( function(nsizer, i) {
				nsizer.innerhtml = "";
				nsizer.style.width = aapplied[i];
			}, anheadsizers );
			
			if ( o.ntfoot !== null )
			{
				_fnapplytochildren( function(nsizer, i) {
					nsizer.innerhtml = "";
					nsizer.style.width = aappliedfooter[i];
				}, anfootsizers );
			}
			
			/* sanity check that the table is of a sensible width. if not then we are going to get
			 * misalignment - try to prevent this by not allowing the table to shrink below its min width
			 */
			if ( $(o.ntable).outerwidth() < isanitywidth )
			{
				/* the min width depends upon if we have a vertical scrollbar visible or not */
				var icorrection = ((nscrollbody.scrollheight > nscrollbody.offsetheight || 
					$(nscrollbody).css('overflow-y') == "scroll")) ?
						isanitywidth+o.oscroll.ibarwidth : isanitywidth;
				
				/* ie6/7 are a law unto themselves... */
				if ( ie67 && (nscrollbody.scrollheight > 
					nscrollbody.offsetheight || $(nscrollbody).css('overflow-y') == "scroll")  )
				{
					o.ntable.style.width = _fnstringtocss( icorrection-o.oscroll.ibarwidth );
				}
				
				/* apply the calculated minimum width to the table wrappers */
				nscrollbody.style.width = _fnstringtocss( icorrection );
				o.nscrollhead.style.width = _fnstringtocss( icorrection );
				
				if ( o.ntfoot !== null )
				{
					o.nscrollfoot.style.width = _fnstringtocss( icorrection );
				}
				
				/* and give the user a warning that we've stopped the table getting too small */
				if ( o.oscroll.sx === "" )
				{
					_fnlog( o, 1, "the table cannot fit into the current element which will cause column"+
						" misalignment. the table has been drawn at its minimum possible width." );
				}
				else if ( o.oscroll.sxinner !== "" )
				{
					_fnlog( o, 1, "the table cannot fit into the current element which will cause column"+
						" misalignment. increase the sscrollxinner value or remove it to allow automatic"+
						" calculation" );
				}
			}
			else
			{
				nscrollbody.style.width = _fnstringtocss( '100%' );
				o.nscrollhead.style.width = _fnstringtocss( '100%' );
				
				if ( o.ntfoot !== null )
				{
					o.nscrollfoot.style.width = _fnstringtocss( '100%' );
				}
			}
			
			
			/*
			 * 4. clean up
			 */
			if ( o.oscroll.sy === "" )
			{
				/* ie7< puts a vertical scrollbar in place (when it shouldn't be) due to subtracting
				 * the scrollbar height from the visible display, rather than adding it on. we need to
				 * set the height in order to sort this. don't want to do it in any other browsers.
				 */
				if ( ie67 )
				{
					nscrollbody.style.height = _fnstringtocss( o.ntable.offsetheight+o.oscroll.ibarwidth );
				}
			}
			
			if ( o.oscroll.sy !== "" && o.oscroll.bcollapse )
			{
				nscrollbody.style.height = _fnstringtocss( o.oscroll.sy );
				
				var iextra = (o.oscroll.sx !== "" && o.ntable.offsetwidth > nscrollbody.offsetwidth) ?
				 	o.oscroll.ibarwidth : 0;
				if ( o.ntable.offsetheight < nscrollbody.offsetheight )
				{
					nscrollbody.style.height = _fnstringtocss( o.ntable.offsetheight+iextra );
				}
			}
			
			/* finally set the width's of the header and footer tables */
			var iouterwidth = $(o.ntable).outerwidth();
			nscrollheadtable.style.width = _fnstringtocss( iouterwidth );
			nscrollheadinner.style.width = _fnstringtocss( iouterwidth );
		
			// figure out if there are scrollbar present - if so then we need a the header and footer to
			// provide a bit more space to allow "overflow" scrolling (i.e. past the scrollbar)
			var bscrolling = $(o.ntable).height() > nscrollbody.clientheight || $(nscrollbody).css('overflow-y') == "scroll";
			nscrollheadinner.style.paddingright = bscrolling ? o.oscroll.ibarwidth+"px" : "0px";
			
			if ( o.ntfoot !== null )
			{
				nscrollfoottable.style.width = _fnstringtocss( iouterwidth );
				nscrollfootinner.style.width = _fnstringtocss( iouterwidth );
				nscrollfootinner.style.paddingright = bscrolling ? o.oscroll.ibarwidth+"px" : "0px";
			}
		
			/* adjust the position of the header in case we loose the y-scrollbar */
			$(nscrollbody).scroll();
			
			/* if sorting or filtering has occurred, jump the scrolling back to the top */
			if ( o.bsorted || o.bfiltered )
			{
				nscrollbody.scrolltop = 0;
			}
		}
		
		
		/**
		 * apply a given function to the display child nodes of an element array (typically
		 * td children of tr rows
		 *  @param {function} fn method to apply to the objects
		 *  @param array {nodes} an1 list of elements to look through for display children
		 *  @param array {nodes} an2 another list (identical structure to the first) - optional
		 *  @memberof datatable#oapi
		 */
		function _fnapplytochildren( fn, an1, an2 )
		{
			var index=0, i=0, ilen=an1.length;
			var nnode1, nnode2;
		
			while ( i < ilen )
			{
				nnode1 = an1[i].firstchild;
				nnode2 = an2 ? an2[i].firstchild : null;
				while ( nnode1 )
				{
					if ( nnode1.nodetype === 1 )
					{
						if ( an2 )
						{
							fn( nnode1, nnode2, index );
						}
						else
						{
							fn( nnode1, index );
						}
						index++;
					}
					nnode1 = nnode1.nextsibling;
					nnode2 = an2 ? nnode2.nextsibling : null;
				}
				i++;
			}
		}
		
		/**
		 * convert a css unit width to pixels (e.g. 2em)
		 *  @param {string} swidth width to be converted
		 *  @param {node} nparent parent to get the with for (required for relative widths) - optional
		 *  @returns {int} iwidth width in pixels
		 *  @memberof datatable#oapi
		 */
		function _fnconverttowidth ( swidth, nparent )
		{
			if ( !swidth || swidth === null || swidth === '' )
			{
				return 0;
			}
			
			if ( !nparent )
			{
				nparent = document.body;
			}
			
			var iwidth;
			var ntmp = document.createelement( "div" );
			ntmp.style.width = _fnstringtocss( swidth );
			
			nparent.appendchild( ntmp );
			iwidth = ntmp.offsetwidth;
			nparent.removechild( ntmp );
			
			return ( iwidth );
		}
		
		
		/**
		 * calculate the width of columns for the table
		 *  @param {object} osettings datatables settings object
		 *  @memberof datatable#oapi
		 */
		function _fncalculatecolumnwidths ( osettings )
		{
			var itablewidth = osettings.ntable.offsetwidth;
			var iuserinputs = 0;
			var itmpwidth;
			var ivisiblecolumns = 0;
			var icolums = osettings.aocolumns.length;
			var i, iindex, icorrector, iwidth;
			var oheaders = $('th', osettings.nthead);
			var widthattr = osettings.ntable.getattribute('width');
			var nwrapper = osettings.ntable.parentnode;
			
			/* convert any user input sizes into pixel sizes */
			for ( i=0 ; i<icolums ; i++ )
			{
				if ( osettings.aocolumns[i].bvisible )
				{
					ivisiblecolumns++;
					
					if ( osettings.aocolumns[i].swidth !== null )
					{
						itmpwidth = _fnconverttowidth( osettings.aocolumns[i].swidthorig, 
							nwrapper );
						if ( itmpwidth !== null )
						{
							osettings.aocolumns[i].swidth = _fnstringtocss( itmpwidth );
						}
							
						iuserinputs++;
					}
				}
			}
			
			/* if the number of columns in the dom equals the number that we have to process in 
			 * datatables, then we can use the offsets that are created by the web-browser. no custom 
			 * sizes can be set in order for this to happen, nor scrolling used
			 */
			if ( icolums == oheaders.length && iuserinputs === 0 && ivisiblecolumns == icolums &&
				osettings.oscroll.sx === "" && osettings.oscroll.sy === "" )
			{
				for ( i=0 ; i<osettings.aocolumns.length ; i++ )
				{
					itmpwidth = $(oheaders[i]).width();
					if ( itmpwidth !== null )
					{
						osettings.aocolumns[i].swidth = _fnstringtocss( itmpwidth );
					}
				}
			}
			else
			{
				/* otherwise we are going to have to do some calculations to get the width of each column.
				 * construct a 1 row table with the widest node in the data, and any user defined widths,
				 * then insert it into the dom and allow the browser to do all the hard work of
				 * calculating table widths.
				 */
				var
					ncalctmp = osettings.ntable.clonenode( false ),
					ntheadclone = osettings.nthead.clonenode(true),
					nbody = document.createelement( 'tbody' ),
					ntr = document.createelement( 'tr' ),
					ndivsizing;
				
				ncalctmp.removeattribute( "id" );
				ncalctmp.appendchild( ntheadclone );
				if ( osettings.ntfoot !== null )
				{
					ncalctmp.appendchild( osettings.ntfoot.clonenode(true) );
					_fnapplytochildren( function(n) {
						n.style.width = "";
					}, ncalctmp.getelementsbytagname('tr') );
				}
				
				ncalctmp.appendchild( nbody );
				nbody.appendchild( ntr );
				
				/* remove any sizing that was previously applied by the styles */
				var jqcolsizing = $('thead th', ncalctmp);
				if ( jqcolsizing.length === 0 )
				{
					jqcolsizing = $('tbody tr:eq(0)>td', ncalctmp);
				}
		
				/* apply custom sizing to the cloned header */
				var nths = _fngetuniqueths( osettings, ntheadclone );
				icorrector = 0;
				for ( i=0 ; i<icolums ; i++ )
				{
					var ocolumn = osettings.aocolumns[i];
					if ( ocolumn.bvisible && ocolumn.swidthorig !== null && ocolumn.swidthorig !== "" )
					{
						nths[i-icorrector].style.width = _fnstringtocss( ocolumn.swidthorig );
					}
					else if ( ocolumn.bvisible )
					{
						nths[i-icorrector].style.width = "";
					}
					else
					{
						icorrector++;
					}
				}
		
				/* find the biggest td for each column and put it into the table */
				for ( i=0 ; i<icolums ; i++ )
				{
					if ( osettings.aocolumns[i].bvisible )
					{
						var ntd = _fngetwidestnode( osettings, i );
						if ( ntd !== null )
						{
							ntd = ntd.clonenode(true);
							if ( osettings.aocolumns[i].scontentpadding !== "" )
							{
								ntd.innerhtml += osettings.aocolumns[i].scontentpadding;
							}
							ntr.appendchild( ntd );
						}
					}
				}
				
				/* build the table and 'display' it */
				nwrapper.appendchild( ncalctmp );
				
				/* when scrolling (x or y) we want to set the width of the table as appropriate. however,
				 * when not scrolling leave the table width as it is. this results in slightly different,
				 * but i think correct behaviour
				 */
				if ( osettings.oscroll.sx !== "" && osettings.oscroll.sxinner !== "" )
				{
					ncalctmp.style.width = _fnstringtocss(osettings.oscroll.sxinner);
				}
				else if ( osettings.oscroll.sx !== "" )
				{
					ncalctmp.style.width = "";
					if ( $(ncalctmp).width() < nwrapper.offsetwidth )
					{
						ncalctmp.style.width = _fnstringtocss( nwrapper.offsetwidth );
					}
				}
				else if ( osettings.oscroll.sy !== "" )
				{
					ncalctmp.style.width = _fnstringtocss( nwrapper.offsetwidth );
				}
				else if ( widthattr )
				{
					ncalctmp.style.width = _fnstringtocss( widthattr );
				}
				ncalctmp.style.visibility = "hidden";
				
				/* scrolling considerations */
				_fnscrollingwidthadjust( osettings, ncalctmp );
				
				/* read the width's calculated by the browser and store them for use by the caller. we
				 * first of all try to use the elements in the body, but it is possible that there are
				 * no elements there, under which circumstances we use the header elements
				 */
				var onodes = $("tbody tr:eq(0)", ncalctmp).children();
				if ( onodes.length === 0 )
				{
					onodes = _fngetuniqueths( osettings, $('thead', ncalctmp)[0] );
				}
		
				/* browsers need a bit of a hand when a width is assigned to any columns when 
				 * x-scrolling as they tend to collapse the table to the min-width, even if
				 * we sent the column widths. so we need to keep track of what the table width
				 * should be by summing the user given values, and the automatic values
				 */
				if ( osettings.oscroll.sx !== "" )
				{
					var itotal = 0;
					icorrector = 0;
					for ( i=0 ; i<osettings.aocolumns.length ; i++ )
					{
						if ( osettings.aocolumns[i].bvisible )
						{
							if ( osettings.aocolumns[i].swidthorig === null )
							{
								itotal += $(onodes[icorrector]).outerwidth();
							}
							else
							{
								itotal += parseint(osettings.aocolumns[i].swidth.replace('px',''), 10) +
									($(onodes[icorrector]).outerwidth() - $(onodes[icorrector]).width());
							}
							icorrector++;
						}
					}
					
					ncalctmp.style.width = _fnstringtocss( itotal );
					osettings.ntable.style.width = _fnstringtocss( itotal );
				}
		
				icorrector = 0;
				for ( i=0 ; i<osettings.aocolumns.length ; i++ )
				{
					if ( osettings.aocolumns[i].bvisible )
					{
						iwidth = $(onodes[icorrector]).width();
						if ( iwidth !== null && iwidth > 0 )
						{
							osettings.aocolumns[i].swidth = _fnstringtocss( iwidth );
						}
						icorrector++;
					}
				}
		
				var csswidth = $(ncalctmp).css('width');
				osettings.ntable.style.width = (csswidth.indexof('%') !== -1) ?
				    csswidth : _fnstringtocss( $(ncalctmp).outerwidth() );
				ncalctmp.parentnode.removechild( ncalctmp );
			}
		
			if ( widthattr )
			{
				osettings.ntable.style.width = _fnstringtocss( widthattr );
			}
		}
		
		
		/**
		 * adjust a table's width to take account of scrolling
		 *  @param {object} osettings datatables settings object
		 *  @param {node} n table node
		 *  @memberof datatable#oapi
		 */
		function _fnscrollingwidthadjust ( osettings, n )
		{
			if ( osettings.oscroll.sx === "" && osettings.oscroll.sy !== "" )
			{
				/* when y-scrolling only, we want to remove the width of the scroll bar so the table
				 * + scroll bar will fit into the area avaialble.
				 */
				var iorigwidth = $(n).width();
				n.style.width = _fnstringtocss( $(n).outerwidth()-osettings.oscroll.ibarwidth );
			}
			else if ( osettings.oscroll.sx !== "" )
			{
				/* when x-scrolling both ways, fix the table at it's current size, without adjusting */
				n.style.width = _fnstringtocss( $(n).outerwidth() );
			}
		}
		
		
		/**
		 * get the widest node
		 *  @param {object} osettings datatables settings object
		 *  @param {int} icol column of interest
		 *  @returns {node} widest table node
		 *  @memberof datatable#oapi
		 */
		function _fngetwidestnode( osettings, icol )
		{
			var imaxindex = _fngetmaxlenstring( osettings, icol );
			if ( imaxindex < 0 )
			{
				return null;
			}
		
			if ( osettings.aodata[imaxindex].ntr === null )
			{
				var n = document.createelement('td');
				n.innerhtml = _fngetcelldata( osettings, imaxindex, icol, '' );
				return n;
			}
			return _fngettdnodes(osettings, imaxindex)[icol];
		}
		
		
		/**
		 * get the maximum strlen for each data column
		 *  @param {object} osettings datatables settings object
		 *  @param {int} icol column of interest
		 *  @returns {string} max string length for each column
		 *  @memberof datatable#oapi
		 */
		function _fngetmaxlenstring( osettings, icol )
		{
			var imax = -1;
			var imaxindex = -1;
			
			for ( var i=0 ; i<osettings.aodata.length ; i++ )
			{
				var s = _fngetcelldata( osettings, i, icol, 'display' )+"";
				s = s.replace( /<.*?>/g, "" );
				if ( s.length > imax )
				{
					imax = s.length;
					imaxindex = i;
				}
			}
			
			return imaxindex;
		}
		
		
		/**
		 * append a css unit (only if required) to a string
		 *  @param {array} aarray1 first array
		 *  @param {array} aarray2 second array
		 *  @returns {int} 0 if match, 1 if length is different, 2 if no match
		 *  @memberof datatable#oapi
		 */
		function _fnstringtocss( s )
		{
			if ( s === null )
			{
				return "0px";
			}
			
			if ( typeof s == 'number' )
			{
				if ( s < 0 )
				{
					return "0px";
				}
				return s+"px";
			}
			
			/* check if the last character is not 0-9 */
			var c = s.charcodeat( s.length-1 );
			if (c < 0x30 || c > 0x39)
			{
				return s;
			}
			return s+"px";
		}
		
		
		/**
		 * get the width of a scroll bar in this browser being used
		 *  @returns {int} width in pixels
		 *  @memberof datatable#oapi
		 */
		function _fnscrollbarwidth ()
		{  
			var inner = document.createelement('p');
			var style = inner.style;
			style.width = "100%";
			style.height = "200px";
			style.padding = "0px";
			
			var outer = document.createelement('div');
			style = outer.style;
			style.position = "absolute";
			style.top = "0px";
			style.left = "0px";
			style.visibility = "hidden";
			style.width = "200px";
			style.height = "150px";
			style.padding = "0px";
			style.overflow = "hidden";
			outer.appendchild(inner);
			
			document.body.appendchild(outer);
			var w1 = inner.offsetwidth;
			outer.style.overflow = 'scroll';
			var w2 = inner.offsetwidth;
			if ( w1 == w2 )
			{
				w2 = outer.clientwidth;
			}
			
			document.body.removechild(outer);
			return (w1 - w2);  
		}
		
		/**
		 * change the order of the table
		 *  @param {object} osettings datatables settings object
		 *  @param {bool} bapplyclasses optional - should we apply classes or not
		 *  @memberof datatable#oapi
		 */
		function _fnsort ( osettings, bapplyclasses )
		{
			var
				i, ilen, j, jlen, k, klen,
				sdatatype, nth,
				aasort = [],
			 	aiorig = [],
				osort = datatable.ext.osort,
				aodata = osettings.aodata,
				aocolumns = osettings.aocolumns,
				oaria = osettings.olanguage.oaria;
			
			/* no sorting required if server-side or no sorting array */
			if ( !osettings.ofeatures.bserverside && 
				(osettings.aasorting.length !== 0 || osettings.aasortingfixed !== null) )
			{
				aasort = ( osettings.aasortingfixed !== null ) ?
					osettings.aasortingfixed.concat( osettings.aasorting ) :
					osettings.aasorting.slice();
				
				/* if there is a sorting data type, and a function belonging to it, then we need to
				 * get the data from the developer's function and apply it for this column
				 */
				for ( i=0 ; i<aasort.length ; i++ )
				{
					var icolumn = aasort[i][0];
					var iviscolumn = _fncolumnindextovisible( osettings, icolumn );
					sdatatype = osettings.aocolumns[ icolumn ].ssortdatatype;
					if ( datatable.ext.afnsortdata[sdatatype] )
					{
						var adata = datatable.ext.afnsortdata[sdatatype].call( 
							osettings.oinstance, osettings, icolumn, iviscolumn
						);
						if ( adata.length === aodata.length )
						{
							for ( j=0, jlen=aodata.length ; j<jlen ; j++ )
							{
								_fnsetcelldata( osettings, j, icolumn, adata[j] );
							}
						}
						else
						{
							_fnlog( osettings, 0, "returned data sort array (col "+icolumn+") is the wrong length" );
						}
					}
				}
				
				/* create a value - key array of the current row positions such that we can use their
				 * current position during the sort, if values match, in order to perform stable sorting
				 */
				for ( i=0, ilen=osettings.aidisplaymaster.length ; i<ilen ; i++ )
				{
					aiorig[ osettings.aidisplaymaster[i] ] = i;
				}
		
				/* build an internal data array which is specific to the sort, so we can get and prep
				 * the data to be sorted only once, rather than needing to do it every time the sorting
				 * function runs. this make the sorting function a very simple comparison
				 */
				var isortlen = aasort.length;
				var fnsortformat, adatasort;
				for ( i=0, ilen=aodata.length ; i<ilen ; i++ )
				{
					for ( j=0 ; j<isortlen ; j++ )
					{
						adatasort = aocolumns[ aasort[j][0] ].adatasort;
		
						for ( k=0, klen=adatasort.length ; k<klen ; k++ )
						{
							sdatatype = aocolumns[ adatasort[k] ].stype;
							fnsortformat = osort[ (sdatatype ? sdatatype : 'string')+"-pre" ];
							
							aodata[i]._asortdata[ adatasort[k] ] = fnsortformat ?
								fnsortformat( _fngetcelldata( osettings, i, adatasort[k], 'sort' ) ) :
								_fngetcelldata( osettings, i, adatasort[k], 'sort' );
						}
					}
				}
				
				/* do the sort - here we want multi-column sorting based on a given data source (column)
				 * and sorting function (from osort) in a certain direction. it's reasonably complex to
				 * follow on it's own, but this is what we want (example two column sorting):
				 *  fnlocalsorting = function(a,b){
				 *  	var itest;
				 *  	itest = osort['string-asc']('data11', 'data12');
				 *  	if (itest !== 0)
				 *  		return itest;
				 *    itest = osort['numeric-desc']('data21', 'data22');
				 *    if (itest !== 0)
				 *  		return itest;
				 *  	return osort['numeric-asc']( aiorig[a], aiorig[b] );
				 *  }
				 * basically we have a test for each sorting column, if the data in that column is equal,
				 * test the next column. if all columns match, then we use a numeric sort on the row 
				 * positions in the original data array to provide a stable sort.
				 */
				osettings.aidisplaymaster.sort( function ( a, b ) {
					var k, l, llen, itest, adatasort, sdatatype;
					for ( k=0 ; k<isortlen ; k++ )
					{
						adatasort = aocolumns[ aasort[k][0] ].adatasort;
		
						for ( l=0, llen=adatasort.length ; l<llen ; l++ )
						{
							sdatatype = aocolumns[ adatasort[l] ].stype;
							
							itest = osort[ (sdatatype ? sdatatype : 'string')+"-"+aasort[k][1] ](
								aodata[a]._asortdata[ adatasort[l] ],
								aodata[b]._asortdata[ adatasort[l] ]
							);
						
							if ( itest !== 0 )
							{
								return itest;
							}
						}
					}
					
					return osort['numeric-asc']( aiorig[a], aiorig[b] );
				} );
			}
			
			/* alter the sorting classes to take account of the changes */
			if ( (bapplyclasses === undefined || bapplyclasses) && !osettings.ofeatures.bdeferrender )
			{
				_fnsortingclasses( osettings );
			}
		
			for ( i=0, ilen=osettings.aocolumns.length ; i<ilen ; i++ )
			{
				var stitle = aocolumns[i].stitle.replace( /<.*?>/g, "" );
				nth = aocolumns[i].nth;
				nth.removeattribute('aria-sort');
				nth.removeattribute('aria-label');
				
				/* in aria only the first sorting column can be marked as sorting - no multi-sort option */
				if ( aocolumns[i].bsortable )
				{
					if ( aasort.length > 0 && aasort[0][0] == i )
					{
						nth.setattribute('aria-sort', aasort[0][1]=="asc" ? "ascending" : "descending" );
						
						var nextsort = (aocolumns[i].assorting[ aasort[0][2]+1 ]) ? 
							aocolumns[i].assorting[ aasort[0][2]+1 ] : aocolumns[i].assorting[0];
						nth.setattribute('aria-label', stitle+
							(nextsort=="asc" ? oaria.ssortascending : oaria.ssortdescending) );
					}
					else
					{
						nth.setattribute('aria-label', stitle+
							(aocolumns[i].assorting[0]=="asc" ? oaria.ssortascending : oaria.ssortdescending) );
					}
				}
				else
				{
					nth.setattribute('aria-label', stitle);
				}
			}
			
			/* tell the draw function that we have sorted the data */
			osettings.bsorted = true;
			$(osettings.oinstance).trigger('sort', osettings);
			
			/* copy the master data into the draw array and re-draw */
			if ( osettings.ofeatures.bfilter )
			{
				/* _fnfilter() will redraw the table for us */
				_fnfiltercomplete( osettings, osettings.oprevioussearch, 1 );
			}
			else
			{
				osettings.aidisplay = osettings.aidisplaymaster.slice();
				osettings._idisplaystart = 0; /* reset display back to page 0 */
				_fncalculateend( osettings );
				_fndraw( osettings );
			}
		}
		
		
		/**
		 * attach a sort handler (click) to a node
		 *  @param {object} osettings datatables settings object
		 *  @param {node} nnode node to attach the handler to
		 *  @param {int} idataindex column sorting index
		 *  @param {function} [fncallback] callback function
		 *  @memberof datatable#oapi
		 */
		function _fnsortattachlistener ( osettings, nnode, idataindex, fncallback )
		{
			_fnbindaction( nnode, {}, function (e) {
				/* if the column is not sortable - don't to anything */
				if ( osettings.aocolumns[idataindex].bsortable === false )
				{
					return;
				}
				
				/*
				 * this is a little bit odd i admit... i declare a temporary function inside the scope of
				 * _fnbuildhead and the click handler in order that the code presented here can be used 
				 * twice - once for when bprocessing is enabled, and another time for when it is 
				 * disabled, as we need to perform slightly different actions.
				 *   basically the issue here is that the javascript engine in modern browsers don't 
				 * appear to allow the rendering engine to update the display while it is still executing
				 * it's thread (well - it does but only after long intervals). this means that the 
				 * 'processing' display doesn't appear for a table sort. to break the js thread up a bit
				 * i force an execution break by using settimeout - but this breaks the expected 
				 * thread continuation for the end-developer's point of view (their code would execute
				 * too early), so we only do it when we absolutely have to.
				 */
				var fninnersorting = function () {
					var icolumn, inextsort;
					
					/* if the shift key is pressed then we are multiple column sorting */
					if ( e.shiftkey )
					{
						/* are we already doing some kind of sort on this column? */
						var bfound = false;
						for ( var i=0 ; i<osettings.aasorting.length ; i++ )
						{
							if ( osettings.aasorting[i][0] == idataindex )
							{
								bfound = true;
								icolumn = osettings.aasorting[i][0];
								inextsort = osettings.aasorting[i][2]+1;
								
								if ( !osettings.aocolumns[icolumn].assorting[inextsort] )
								{
									/* reached the end of the sorting options, remove from multi-col sort */
									osettings.aasorting.splice( i, 1 );
								}
								else
								{
									/* move onto next sorting direction */
									osettings.aasorting[i][1] = osettings.aocolumns[icolumn].assorting[inextsort];
									osettings.aasorting[i][2] = inextsort;
								}
								break;
							}
						}
						
						/* no sort yet - add it in */
						if ( bfound === false )
						{
							osettings.aasorting.push( [ idataindex, 
								osettings.aocolumns[idataindex].assorting[0], 0 ] );
						}
					}
					else
					{
						/* if no shift key then single column sort */
						if ( osettings.aasorting.length == 1 && osettings.aasorting[0][0] == idataindex )
						{
							icolumn = osettings.aasorting[0][0];
							inextsort = osettings.aasorting[0][2]+1;
							if ( !osettings.aocolumns[icolumn].assorting[inextsort] )
							{
								inextsort = 0;
							}
							osettings.aasorting[0][1] = osettings.aocolumns[icolumn].assorting[inextsort];
							osettings.aasorting[0][2] = inextsort;
						}
						else
						{
							osettings.aasorting.splice( 0, osettings.aasorting.length );
							osettings.aasorting.push( [ idataindex, 
								osettings.aocolumns[idataindex].assorting[0], 0 ] );
						}
					}
					
					/* run the sort */
					_fnsort( osettings );
				}; /* /fninnersorting */
				
				if ( !osettings.ofeatures.bprocessing )
				{
					fninnersorting();
				}
				else
				{
					_fnprocessingdisplay( osettings, true );
					settimeout( function() {
						fninnersorting();
						if ( !osettings.ofeatures.bserverside )
						{
							_fnprocessingdisplay( osettings, false );
						}
					}, 0 );
				}
				
				/* call the user specified callback function - used for async user interaction */
				if ( typeof fncallback == 'function' )
				{
					fncallback( osettings );
				}
			} );
		}
		
		
		/**
		 * set the sorting classes on the header, note: it is safe to call this function 
		 * when bsort and bsortclasses are false
		 *  @param {object} osettings datatables settings object
		 *  @memberof datatable#oapi
		 */
		function _fnsortingclasses( osettings )
		{
			var i, ilen, j, jlen, ifound;
			var aasort, sclass;
			var icolumns = osettings.aocolumns.length;
			var oclasses = osettings.oclasses;
			
			for ( i=0 ; i<icolumns ; i++ )
			{
				if ( osettings.aocolumns[i].bsortable )
				{
					$(osettings.aocolumns[i].nth).removeclass( oclasses.ssortasc +" "+ oclasses.ssortdesc +
						" "+ osettings.aocolumns[i].ssortingclass );
				}
			}
			
			if ( osettings.aasortingfixed !== null )
			{
				aasort = osettings.aasortingfixed.concat( osettings.aasorting );
			}
			else
			{
				aasort = osettings.aasorting.slice();
			}
			
			/* apply the required classes to the header */
			for ( i=0 ; i<osettings.aocolumns.length ; i++ )
			{
				if ( osettings.aocolumns[i].bsortable )
				{
					sclass = osettings.aocolumns[i].ssortingclass;
					ifound = -1;
					for ( j=0 ; j<aasort.length ; j++ )
					{
						if ( aasort[j][0] == i )
						{
							sclass = ( aasort[j][1] == "asc" ) ?
								oclasses.ssortasc : oclasses.ssortdesc;
							ifound = j;
							break;
						}
					}
					$(osettings.aocolumns[i].nth).addclass( sclass );
					
					if ( osettings.bjui )
					{
						/* jquery ui uses extra markup */
						var jqspan = $("span."+oclasses.ssorticon,  osettings.aocolumns[i].nth);
						jqspan.removeclass(oclasses.ssortjuiasc +" "+ oclasses.ssortjuidesc +" "+ 
							oclasses.ssortjui +" "+ oclasses.ssortjuiascallowed +" "+ oclasses.ssortjuidescallowed );
						
						var sspanclass;
						if ( ifound == -1 )
						{
						 	sspanclass = osettings.aocolumns[i].ssortingclassjui;
						}
						else if ( aasort[ifound][1] == "asc" )
						{
							sspanclass = oclasses.ssortjuiasc;
						}
						else
						{
							sspanclass = oclasses.ssortjuidesc;
						}
						
						jqspan.addclass( sspanclass );
					}
				}
				else
				{
					/* no sorting on this column, so add the base class. this will have been assigned by
					 * _fnaddcolumn
					 */
					$(osettings.aocolumns[i].nth).addclass( osettings.aocolumns[i].ssortingclass );
				}
			}
			
			/* 
			 * apply the required classes to the table body
			 * note that this is given as a feature switch since it can significantly slow down a sort
			 * on large data sets (adding and removing of classes is always slow at the best of times..)
			 * further to this, note that this code is admittedly fairly ugly. it could be made a lot 
			 * simpler using jquery selectors and add/removeclass, but that is significantly slower
			 * (on the order of 5 times slower) - hence the direct dom manipulation here.
			 * note that for deferred drawing we do use jquery - the reason being that taking the first
			 * row found to see if the whole column needs processed can miss classes since the first
			 * column might be new.
			 */
			sclass = oclasses.ssortcolumn;
			
			if ( osettings.ofeatures.bsort && osettings.ofeatures.bsortclasses )
			{
				var ntds = _fngettdnodes( osettings );
				
				/* determine what the sorting class for each column should be */
				var iclass, itargetcol;
				var asclasses = [];
				for (i = 0; i < icolumns; i++)
				{
					asclasses.push("");
				}
				for (i = 0, iclass = 1; i < aasort.length; i++)
				{
					itargetcol = parseint( aasort[i][0], 10 );
					asclasses[itargetcol] = sclass + iclass;
					
					if ( iclass < 3 )
					{
						iclass++;
					}
				}
				
				/* make changes to the classes for each cell as needed */
				var reclass = new regexp(sclass + "[123]");
				var stmpclass, scurrentclass, snewclass;
				for ( i=0, ilen=ntds.length; i<ilen; i++ )
				{
					/* determine which column we're looking at */
					itargetcol = i % icolumns;
					
					/* what is the full list of classes now */
					scurrentclass = ntds[i].classname;
					/* what sorting class should be applied? */
					snewclass = asclasses[itargetcol];
					/* what would the new full list be if we did a replacement? */
					stmpclass = scurrentclass.replace(reclass, snewclass);
					
					if ( stmpclass != scurrentclass )
					{
						/* we changed something */
						ntds[i].classname = $.trim( stmpclass );
					}
					else if ( snewclass.length > 0 && scurrentclass.indexof(snewclass) == -1 )
					{
						/* we need to add a class */
						ntds[i].classname = scurrentclass + " " + snewclass;
					}
				}
			}
		}
		
		
		
		/**
		 * save the state of a table in a cookie such that the page can be reloaded
		 *  @param {object} osettings datatables settings object
		 *  @memberof datatable#oapi
		 */
		function _fnsavestate ( osettings )
		{
			if ( !osettings.ofeatures.bstatesave || osettings.bdestroying )
			{
				return;
			}
		
			/* store the interesting variables */
			var i, ilen, binfinite=osettings.oscroll.binfinite;
			var ostate = {
				"icreate":      new date().gettime(),
				"istart":       (binfinite ? 0 : osettings._idisplaystart),
				"iend":         (binfinite ? osettings._idisplaylength : osettings._idisplayend),
				"ilength":      osettings._idisplaylength,
				"aasorting":    $.extend( true, [], osettings.aasorting ),
				"osearch":      $.extend( true, {}, osettings.oprevioussearch ),
				"aosearchcols": $.extend( true, [], osettings.aopresearchcols ),
				"abviscols":    []
			};
		
			for ( i=0, ilen=osettings.aocolumns.length ; i<ilen ; i++ )
			{
				ostate.abviscols.push( osettings.aocolumns[i].bvisible );
			}
		
			_fncallbackfire( osettings, "aostatesaveparams", 'statesaveparams', [osettings, ostate] );
			
			osettings.fnstatesave.call( osettings.oinstance, osettings, ostate );
		}
		
		
		/**
		 * attempt to load a saved table state from a cookie
		 *  @param {object} osettings datatables settings object
		 *  @param {object} oinit datatables init object so we can override settings
		 *  @memberof datatable#oapi
		 */
		function _fnloadstate ( osettings, oinit )
		{
			if ( !osettings.ofeatures.bstatesave )
			{
				return;
			}
		
			var odata = osettings.fnstateload.call( osettings.oinstance, osettings );
			if ( !odata )
			{
				return;
			}
			
			/* allow custom and plug-in manipulation functions to alter the saved data set and
			 * cancelling of loading by returning false
			 */
			var abstateload = _fncallbackfire( osettings, 'aostateloadparams', 'stateloadparams', [osettings, odata] );
			if ( $.inarray( false, abstateload ) !== -1 )
			{
				return;
			}
			
			/* store the saved state so it might be accessed at any time */
			osettings.oloadedstate = $.extend( true, {}, odata );
			
			/* restore key features */
			osettings._idisplaystart    = odata.istart;
			osettings.iinitdisplaystart = odata.istart;
			osettings._idisplayend      = odata.iend;
			osettings._idisplaylength   = odata.ilength;
			osettings.aasorting         = odata.aasorting.slice();
			osettings.saved_aasorting   = odata.aasorting.slice();
			
			/* search filtering  */
			$.extend( osettings.oprevioussearch, odata.osearch );
			$.extend( true, osettings.aopresearchcols, odata.aosearchcols );
			
			/* column visibility state
			 * pass back visibility settings to the init handler, but to do not here override
			 * the init object that the user might have passed in
			 */
			oinit.saved_aocolumns = [];
			for ( var i=0 ; i<odata.abviscols.length ; i++ )
			{
				oinit.saved_aocolumns[i] = {};
				oinit.saved_aocolumns[i].bvisible = odata.abviscols[i];
			}
		
			_fncallbackfire( osettings, 'aostateloaded', 'stateloaded', [osettings, odata] );
		}
		
		
		/**
		 * create a new cookie with a value to store the state of a table
		 *  @param {string} sname name of the cookie to create
		 *  @param {string} svalue the value the cookie should take
		 *  @param {int} isecs duration of the cookie
		 *  @param {string} sbasename sname is made up of the base + file name - this is the base
		 *  @param {function} fncallback user definable function to modify the cookie
		 *  @memberof datatable#oapi
		 */
		function _fncreatecookie ( sname, svalue, isecs, sbasename, fncallback )
		{
			var date = new date();
			date.settime( date.gettime()+(isecs*1000) );
			
			/* 
			 * shocking but true - it would appear ie has major issues with having the path not having
			 * a trailing slash on it. we need the cookie to be available based on the path, so we
			 * have to append the file name to the cookie name. appalling. thanks to vex for adding the
			 * patch to use at least some of the path
			 */
			var aparts = window.location.pathname.split('/');
			var snamefile = sname + '_' + aparts.pop().replace(/[\/:]/g,"").tolowercase();
			var sfullcookie, odata;
			
			if ( fncallback !== null )
			{
				odata = (typeof $.parsejson === 'function') ? 
					$.parsejson( svalue ) : eval( '('+svalue+')' );
				sfullcookie = fncallback( snamefile, odata, date.togmtstring(),
					aparts.join('/')+"/" );
			}
			else
			{
				sfullcookie = snamefile + "=" + encodeuricomponent(svalue) +
					"; expires=" + date.togmtstring() +"; path=" + aparts.join('/')+"/";
			}
			
			/* are we going to go over the cookie limit of 4kib? if so, try to delete a cookies
			 * belonging to datatables.
			 */
			var
				acookies =document.cookie.split(';'),
				inewcookielen = sfullcookie.split(';')[0].length,
				aoldcookies = [];
			
			if ( inewcookielen+document.cookie.length+10 > 4096 ) /* magic 10 for padding */
			{
				for ( var i=0, ilen=acookies.length ; i<ilen ; i++ )
				{
					if ( acookies[i].indexof( sbasename ) != -1 )
					{
						/* it's a datatables cookie, so eval it and check the time stamp */
						var asplitcookie = acookies[i].split('=');
						try {
							odata = eval( '('+decodeuricomponent(asplitcookie[1])+')' );
		
							if ( odata && odata.icreate )
							{
								aoldcookies.push( {
									"name": asplitcookie[0],
									"time": odata.icreate
								} );
							}
						}
						catch( e ) {}
					}
				}
		
				// make sure we delete the oldest ones first
				aoldcookies.sort( function (a, b) {
					return b.time - a.time;
				} );
		
				// eliminate as many old datatables cookies as we need to
				while ( inewcookielen + document.cookie.length + 10 > 4096 ) {
					if ( aoldcookies.length === 0 ) {
						// deleted all dt cookies and still not enough space. can't state save
						return;
					}
					
					var old = aoldcookies.pop();
					document.cookie = old.name+"=; expires=thu, 01-jan-1970 00:00:01 gmt; path="+
						aparts.join('/') + "/";
				}
			}
			
			document.cookie = sfullcookie;
		}
		
		
		/**
		 * read an old cookie to get a cookie with an old table state
		 *  @param {string} sname name of the cookie to read
		 *  @returns {string} contents of the cookie - or null if no cookie with that name found
		 *  @memberof datatable#oapi
		 */
		function _fnreadcookie ( sname )
		{
			var
				aparts = window.location.pathname.split('/'),
				snameeq = sname + '_' + aparts[aparts.length-1].replace(/[\/:]/g,"").tolowercase() + '=',
			 	scookiecontents = document.cookie.split(';');
			
			for( var i=0 ; i<scookiecontents.length ; i++ )
			{
				var c = scookiecontents[i];
				
				while (c.charat(0)==' ')
				{
					c = c.substring(1,c.length);
				}
				
				if (c.indexof(snameeq) === 0)
				{
					return decodeuricomponent( c.substring(snameeq.length,c.length) );
				}
			}
			return null;
		}
		
		
		/**
		 * return the settings object for a particular table
		 *  @param {node} ntable table we are using as a datatable
		 *  @returns {object} settings object - or null if not found
		 *  @memberof datatable#oapi
		 */
		function _fnsettingsfromnode ( ntable )
		{
			for ( var i=0 ; i<datatable.settings.length ; i++ )
			{
				if ( datatable.settings[i].ntable === ntable )
				{
					return datatable.settings[i];
				}
			}
			
			return null;
		}
		
		
		/**
		 * return an array with the tr nodes for the table
		 *  @param {object} osettings datatables settings object
		 *  @returns {array} tr array
		 *  @memberof datatable#oapi
		 */
		function _fngettrnodes ( osettings )
		{
			var anodes = [];
			var aodata = osettings.aodata;
			for ( var i=0, ilen=aodata.length ; i<ilen ; i++ )
			{
				if ( aodata[i].ntr !== null )
				{
					anodes.push( aodata[i].ntr );
				}
			}
			return anodes;
		}
		
		
		/**
		 * return an flat array with all td nodes for the table, or row
		 *  @param {object} osettings datatables settings object
		 *  @param {int} [iindividualrow] aodata index to get the nodes for - optional 
		 *    if not given then the return array will contain all nodes for the table
		 *  @returns {array} td array
		 *  @memberof datatable#oapi
		 */
		function _fngettdnodes ( osettings, iindividualrow )
		{
			var anreturn = [];
			var icorrector;
			var antds, ntd;
			var irow, irows=osettings.aodata.length,
				icolumn, icolumns, odata, snodename, istart=0, iend=irows;
			
			/* allow the collection to be limited to just one row */
			if ( iindividualrow !== undefined )
			{
				istart = iindividualrow;
				iend = iindividualrow+1;
			}
		
			for ( irow=istart ; irow<iend ; irow++ )
			{
				odata = osettings.aodata[irow];
				if ( odata.ntr !== null )
				{
					/* get the td child nodes - taking into account text etc nodes */
					antds = [];
					ntd = odata.ntr.firstchild;
					while ( ntd )
					{
						snodename = ntd.nodename.tolowercase();
						if ( snodename == 'td' || snodename == 'th' )
						{
							antds.push( ntd );
						}
						ntd = ntd.nextsibling;
					}
		
					icorrector = 0;
					for ( icolumn=0, icolumns=osettings.aocolumns.length ; icolumn<icolumns ; icolumn++ )
					{
						if ( osettings.aocolumns[icolumn].bvisible )
						{
							anreturn.push( antds[icolumn-icorrector] );
						}
						else
						{
							anreturn.push( odata._anhidden[icolumn] );
							icorrector++;
						}
					}
				}
			}
		
			return anreturn;
		}
		
		
		/**
		 * log an error message
		 *  @param {object} osettings datatables settings object
		 *  @param {int} ilevel log error messages, or display them to the user
		 *  @param {string} smesg error message
		 *  @memberof datatable#oapi
		 */
		function _fnlog( osettings, ilevel, smesg )
		{
			var salert = (osettings===null) ?
				"datatables warning: "+smesg :
				"datatables warning (table id = '"+osettings.stableid+"'): "+smesg;
			
			if ( ilevel === 0 )
			{
				if ( datatable.ext.serrmode == 'alert' )
				{
					alert( salert );
				}
				else
				{
					throw new error(salert);
				}
				return;
			}
			else if ( window.console && console.log )
			{
				console.log( salert );
			}
		}
		
		
		/**
		 * see if a property is defined on one object, if so assign it to the other object
		 *  @param {object} oret target object
		 *  @param {object} osrc source object
		 *  @param {string} sname property
		 *  @param {string} [smappedname] name to map too - optional, sname used if not given
		 *  @memberof datatable#oapi
		 */
		function _fnmap( oret, osrc, sname, smappedname )
		{
			if ( smappedname === undefined )
			{
				smappedname = sname;
			}
			if ( osrc[sname] !== undefined )
			{
				oret[smappedname] = osrc[sname];
			}
		}
		
		
		/**
		 * extend objects - very similar to jquery.extend, but deep copy objects, and shallow
		 * copy arrays. the reason we need to do this, is that we don't want to deep copy array
		 * init values (such as aasorting) since the dev wouldn't be able to override them, but
		 * we do want to deep copy arrays.
		 *  @param {object} oout object to extend
		 *  @param {object} oextender object from which the properties will be applied to oout
		 *  @returns {object} oout reference, just for convenience - oout === the return.
		 *  @memberof datatable#oapi
		 *  @todo this doesn't take account of arrays inside the deep copied objects.
		 */
		function _fnextend( oout, oextender )
		{
			var val;
			
			for ( var prop in oextender )
			{
				if ( oextender.hasownproperty(prop) )
				{
					val = oextender[prop];
		
					if ( typeof oinit[prop] === 'object' && val !== null && $.isarray(val) === false )
					{
						$.extend( true, oout[prop], val );
					}
					else
					{
						oout[prop] = val;
					}
				}
			}
		
			return oout;
		}
		
		
		/**
		 * bind an event handers to allow a click or return key to activate the callback.
		 * this is good for accessibility since a return on the keyboard will have the
		 * same effect as a click, if the element has focus.
		 *  @param {element} n element to bind the action to
		 *  @param {object} odata data object to pass to the triggered function
		 *  @param {function} fn callback function for when the event is triggered
		 *  @memberof datatable#oapi
		 */
		function _fnbindaction( n, odata, fn )
		{
			$(n)
				.bind( 'click.dt', odata, function (e) {
						n.blur(); // remove focus outline for mouse users
						fn(e);
					} )
				.bind( 'keypress.dt', odata, function (e){
					if ( e.which === 13 ) {
						fn(e);
					} } )
				.bind( 'selectstart.dt', function () {
					/* take the brutal approach to cancelling text selection */
					return false;
					} );
		}
		
		
		/**
		 * register a callback function. easily allows a callback function to be added to
		 * an array store of callback functions that can then all be called together.
		 *  @param {object} osettings datatables settings object
		 *  @param {string} sstore name of the array storage for the callbacks in osettings
		 *  @param {function} fn function to be called back
		 *  @param {string} sname identifying name for the callback (i.e. a label)
		 *  @memberof datatable#oapi
		 */
		function _fncallbackreg( osettings, sstore, fn, sname )
		{
			if ( fn )
			{
				osettings[sstore].push( {
					"fn": fn,
					"sname": sname
				} );
			}
		}
		
		
		/**
		 * fire callback functions and trigger events. note that the loop over the callback
		 * array store is done backwards! further note that you do not want to fire off triggers
		 * in time sensitive applications (for example cell creation) as its slow.
		 *  @param {object} osettings datatables settings object
		 *  @param {string} sstore name of the array storage for the callbacks in osettings
		 *  @param {string} strigger name of the jquery custom event to trigger. if null no trigger
		 *    is fired
		 *  @param {array} aargs array of arguments to pass to the callback function / trigger
		 *  @memberof datatable#oapi
		 */
		function _fncallbackfire( osettings, sstore, strigger, aargs )
		{
			var aostore = osettings[sstore];
			var aret =[];
		
			for ( var i=aostore.length-1 ; i>=0 ; i-- )
			{
				aret.push( aostore[i].fn.apply( osettings.oinstance, aargs ) );
			}
		
			if ( strigger !== null )
			{
				$(osettings.oinstance).trigger(strigger, aargs);
			}
		
			return aret;
		}
		
		
		/**
		 * json stringify. if json.stringify it provided by the browser, json2.js or any other
		 * library, then we use that as it is fast, safe and accurate. if the function isn't 
		 * available then we need to built it ourselves - the inspiration for this function comes
		 * from craig buckler ( http://www.sitepoint.com/javascript-json-serialization/ ). it is
		 * not perfect and absolutely should not be used as a replacement to json2.js - but it does
		 * do what we need, without requiring a dependency for datatables.
		 *  @param {object} o json object to be converted
		 *  @returns {string} json string
		 *  @memberof datatable#oapi
		 */
		var _fnjsonstring = (window.json) ? json.stringify : function( o )
		{
			/* not an object or array */
			var stype = typeof o;
			if (stype !== "object" || o === null)
			{
				// simple data type
				if (stype === "string")
				{
					o = '"'+o+'"';
				}
				return o+"";
			}
		
			/* if object or array, need to recurse over it */
			var
				sprop, mvalue,
				json = [],
				barr = $.isarray(o);
			
			for (sprop in o)
			{
				mvalue = o[sprop];
				stype = typeof mvalue;
		
				if (stype === "string")
				{
					mvalue = '"'+mvalue+'"';
				}
				else if (stype === "object" && mvalue !== null)
				{
					mvalue = _fnjsonstring(mvalue);
				}
		
				json.push((barr ? "" : '"'+sprop+'":') + mvalue);
			}
		
			return (barr ? "[" : "{") + json + (barr ? "]" : "}");
		};
		
		
		/**
		 * from some browsers (specifically ie6/7) we need special handling to work around browser
		 * bugs - this function is used to detect when these workarounds are needed.
		 *  @param {object} osettings datatables settings object
		 *  @memberof datatable#oapi
		 */
		function _fnbrowserdetect( osettings )
		{
			/* ie6/7 will oversize a width 100% element inside a scrolling element, to include the
			 * width of the scrollbar, while other browsers ensure the inner element is contained
			 * without forcing scrolling
			 */
			var n = $(
				'<div style="position:absolute; top:0; left:0; height:1px; width:1px; overflow:hidden">'+
					'<div style="position:absolute; top:1px; left:1px; width:100px; overflow:scroll;">'+
						'<div id="dt_browsertest" style="width:100%; height:10px;"></div>'+
					'</div>'+
				'</div>')[0];
		
			document.body.appendchild( n );
			osettings.obrowser.bscrolloversize = $('#dt_browsertest', n)[0].offsetwidth === 100 ? true : false;
			document.body.removechild( n );
		}
		

		/**
		 * perform a jquery selector action on the table's tr elements (from the tbody) and
		 * return the resulting jquery object.
		 *  @param {string|node|jquery} sselector jquery selector or node collection to act on
		 *  @param {object} [oopts] optional parameters for modifying the rows to be included
		 *  @param {string} [oopts.filter=none] select tr elements that meet the current filter
		 *    criterion ("applied") or all tr elements (i.e. no filter).
		 *  @param {string} [oopts.order=current] order of the tr elements in the processed array.
		 *    can be either 'current', whereby the current sorting of the table is used, or
		 *    'original' whereby the original order the data was read into the table is used.
		 *  @param {string} [oopts.page=all] limit the selection to the currently displayed page
		 *    ("current") or not ("all"). if 'current' is given, then order is assumed to be 
		 *    'current' and filter is 'applied', regardless of what they might be given as.
		 *  @returns {object} jquery object, filtered by the given selector.
		 *  @dtopt api
		 *
		 *  @example
		 *    $(document).ready(function() {
		 *      var otable = $('#example').datatable();
		 *
		 *      // highlight every second row
		 *      otable.$('tr:odd').css('backgroundcolor', 'blue');
		 *    } );
		 *
		 *  @example
		 *    $(document).ready(function() {
		 *      var otable = $('#example').datatable();
		 *
		 *      // filter to rows with 'webkit' in them, add a background colour and then
		 *      // remove the filter, thus highlighting the 'webkit' rows only.
		 *      otable.fnfilter('webkit');
		 *      otable.$('tr', {"filter": "applied"}).css('backgroundcolor', 'blue');
		 *      otable.fnfilter('');
		 *    } );
		 */
		this.$ = function ( sselector, oopts )
		{
			var i, ilen, a = [], tr;
			var osettings = _fnsettingsfromnode( this[datatable.ext.iapiindex] );
			var aodata = osettings.aodata;
			var aidisplay = osettings.aidisplay;
			var aidisplaymaster = osettings.aidisplaymaster;
		
			if ( !oopts )
			{
				oopts = {};
			}
		
			oopts = $.extend( {}, {
				"filter": "none", // applied
				"order": "current", // "original"
				"page": "all" // current
			}, oopts );
		
			// current page implies that order=current and fitler=applied, since it is fairly
			// senseless otherwise
			if ( oopts.page == 'current' )
			{
				for ( i=osettings._idisplaystart, ilen=osettings.fndisplayend() ; i<ilen ; i++ )
				{
					tr = aodata[ aidisplay[i] ].ntr;
					if ( tr )
					{
						a.push( tr );
					}
				}
			}
			else if ( oopts.order == "current" && oopts.filter == "none" )
			{
				for ( i=0, ilen=aidisplaymaster.length ; i<ilen ; i++ )
				{
					tr = aodata[ aidisplaymaster[i] ].ntr;
					if ( tr )
					{
						a.push( tr );
					}
				}
			}
			else if ( oopts.order == "current" && oopts.filter == "applied" )
			{
				for ( i=0, ilen=aidisplay.length ; i<ilen ; i++ )
				{
					tr = aodata[ aidisplay[i] ].ntr;
					if ( tr )
					{
						a.push( tr );
					}
				}
			}
			else if ( oopts.order == "original" && oopts.filter == "none" )
			{
				for ( i=0, ilen=aodata.length ; i<ilen ; i++ )
				{
					tr = aodata[ i ].ntr ;
					if ( tr )
					{
						a.push( tr );
					}
				}
			}
			else if ( oopts.order == "original" && oopts.filter == "applied" )
			{
				for ( i=0, ilen=aodata.length ; i<ilen ; i++ )
				{
					tr = aodata[ i ].ntr;
					if ( $.inarray( i, aidisplay ) !== -1 && tr )
					{
						a.push( tr );
					}
				}
			}
			else
			{
				_fnlog( osettings, 1, "unknown selection options" );
			}
		
			/* we need to filter on the tr elements and also 'find' in their descendants
			 * to make the selector act like it would in a full table - so we need
			 * to build both results and then combine them together
			 */
			var jqa = $(a);
			var jqtrs = jqa.filter( sselector );
			var jqdescendants = jqa.find( sselector );
		
			return $( [].concat($.makearray(jqtrs), $.makearray(jqdescendants)) );
		};
		
		
		/**
		 * almost identical to $ in operation, but in this case returns the data for the matched
		 * rows - as such, the jquery selector used should match tr row nodes or td/th cell nodes
		 * rather than any descendants, so the data can be obtained for the row/cell. if matching
		 * rows are found, the data returned is the original data array/object that was used to  
		 * create the row (or a generated array if from a dom source).
		 *
		 * this method is often useful in-combination with $ where both functions are given the
		 * same parameters and the array indexes will match identically.
		 *  @param {string|node|jquery} sselector jquery selector or node collection to act on
		 *  @param {object} [oopts] optional parameters for modifying the rows to be included
		 *  @param {string} [oopts.filter=none] select elements that meet the current filter
		 *    criterion ("applied") or all elements (i.e. no filter).
		 *  @param {string} [oopts.order=current] order of the data in the processed array.
		 *    can be either 'current', whereby the current sorting of the table is used, or
		 *    'original' whereby the original order the data was read into the table is used.
		 *  @param {string} [oopts.page=all] limit the selection to the currently displayed page
		 *    ("current") or not ("all"). if 'current' is given, then order is assumed to be 
		 *    'current' and filter is 'applied', regardless of what they might be given as.
		 *  @returns {array} data for the matched elements. if any elements, as a result of the
		 *    selector, were not tr, td or th elements in the datatable, they will have a null 
		 *    entry in the array.
		 *  @dtopt api
		 *
		 *  @example
		 *    $(document).ready(function() {
		 *      var otable = $('#example').datatable();
		 *
		 *      // get the data from the first row in the table
		 *      var data = otable._('tr:first');
		 *
		 *      // do something useful with the data
		 *      alert( "first cell is: "+data[0] );
		 *    } );
		 *
		 *  @example
		 *    $(document).ready(function() {
		 *      var otable = $('#example').datatable();
		 *
		 *      // filter to 'webkit' and get all data for 
		 *      otable.fnfilter('webkit');
		 *      var data = otable._('tr', {"filter": "applied"});
		 *      
		 *      // do something with the data
		 *      alert( data.length+" rows matched the filter" );
		 *    } );
		 */
		this._ = function ( sselector, oopts )
		{
			var aout = [];
			var i, ilen, iindex;
			var atrs = this.$( sselector, oopts );
		
			for ( i=0, ilen=atrs.length ; i<ilen ; i++ )
			{
				aout.push( this.fngetdata(atrs[i]) );
			}
		
			return aout;
		};
		
		
		/**
		 * add a single new row or multiple rows of data to the table. please note
		 * that this is suitable for client-side processing only - if you are using 
		 * server-side processing (i.e. "bserverside": true), then to add data, you
		 * must add it to the data source, i.e. the server-side, through an ajax call.
		 *  @param {array|object} mdata the data to be added to the table. this can be:
		 *    <ul>
		 *      <li>1d array of data - add a single row with the data provided</li>
		 *      <li>2d array of arrays - add multiple rows in a single call</li>
		 *      <li>object - data object when using <i>mdata</i></li>
		 *      <li>array of objects - multiple data objects when using <i>mdata</i></li>
		 *    </ul>
		 *  @param {bool} [bredraw=true] redraw the table or not
		 *  @returns {array} an array of integers, representing the list of indexes in 
		 *    <i>aodata</i> ({@link datatable.models.osettings}) that have been added to 
		 *    the table.
		 *  @dtopt api
		 *
		 *  @example
		 *    // global var for counter
		 *    var gicount = 2;
		 *    
		 *    $(document).ready(function() {
		 *      $('#example').datatable();
		 *    } );
		 *    
		 *    function fnclickaddrow() {
		 *      $('#example').datatable().fnadddata( [
		 *        gicount+".1",
		 *        gicount+".2",
		 *        gicount+".3",
		 *        gicount+".4" ]
		 *      );
		 *        
		 *      gicount++;
		 *    }
		 */
		this.fnadddata = function( mdata, bredraw )
		{
			if ( mdata.length === 0 )
			{
				return [];
			}
			
			var aireturn = [];
			var itest;
			
			/* find settings from table node */
			var osettings = _fnsettingsfromnode( this[datatable.ext.iapiindex] );
			
			/* check if we want to add multiple rows or not */
			if ( typeof mdata[0] === "object" && mdata[0] !== null )
			{
				for ( var i=0 ; i<mdata.length ; i++ )
				{
					itest = _fnadddata( osettings, mdata[i] );
					if ( itest == -1 )
					{
						return aireturn;
					}
					aireturn.push( itest );
				}
			}
			else
			{
				itest = _fnadddata( osettings, mdata );
				if ( itest == -1 )
				{
					return aireturn;
				}
				aireturn.push( itest );
			}
			
			osettings.aidisplay = osettings.aidisplaymaster.slice();
			
			if ( bredraw === undefined || bredraw )
			{
				_fnredraw( osettings );
			}
			return aireturn;
		};
		
		
		/**
		 * this function will make datatables recalculate the column sizes, based on the data 
		 * contained in the table and the sizes applied to the columns (in the dom, css or 
		 * through the swidth parameter). this can be useful when the width of the table's 
		 * parent element changes (for example a window resize).
		 *  @param {boolean} [bredraw=true] redraw the table or not, you will typically want to
		 *  @dtopt api
		 *
		 *  @example
		 *    $(document).ready(function() {
		 *      var otable = $('#example').datatable( {
		 *        "sscrolly": "200px",
		 *        "bpaginate": false
		 *      } );
		 *      
		 *      $(window).bind('resize', function () {
		 *        otable.fnadjustcolumnsizing();
		 *      } );
		 *    } );
		 */
		this.fnadjustcolumnsizing = function ( bredraw )
		{
			var osettings = _fnsettingsfromnode(this[datatable.ext.iapiindex]);
			_fnadjustcolumnsizing( osettings );
			
			if ( bredraw === undefined || bredraw )
			{
				this.fndraw( false );
			}
			else if ( osettings.oscroll.sx !== "" || osettings.oscroll.sy !== "" )
			{
				/* if not redrawing, but scrolling, we want to apply the new column sizes anyway */
				this.oapi._fnscrolldraw(osettings);
			}
		};
		
		
		/**
		 * quickly and simply clear a table
		 *  @param {bool} [bredraw=true] redraw the table or not
		 *  @dtopt api
		 *
		 *  @example
		 *    $(document).ready(function() {
		 *      var otable = $('#example').datatable();
		 *      
		 *      // immediately 'nuke' the current rows (perhaps waiting for an ajax callback...)
		 *      otable.fncleartable();
		 *    } );
		 */
		this.fncleartable = function( bredraw )
		{
			/* find settings from table node */
			var osettings = _fnsettingsfromnode( this[datatable.ext.iapiindex] );
			_fncleartable( osettings );
			
			if ( bredraw === undefined || bredraw )
			{
				_fndraw( osettings );
			}
		};
		
		
		/**
		 * the exact opposite of 'opening' a row, this function will close any rows which 
		 * are currently 'open'.
		 *  @param {node} ntr the table row to 'close'
		 *  @returns {int} 0 on success, or 1 if failed (can't find the row)
		 *  @dtopt api
		 *
		 *  @example
		 *    $(document).ready(function() {
		 *      var otable;
		 *      
		 *      // 'open' an information row when a row is clicked on
		 *      $('#example tbody tr').click( function () {
		 *        if ( otable.fnisopen(this) ) {
		 *          otable.fnclose( this );
		 *        } else {
		 *          otable.fnopen( this, "temporary row opened", "info_row" );
		 *        }
		 *      } );
		 *      
		 *      otable = $('#example').datatable();
		 *    } );
		 */
		this.fnclose = function( ntr )
		{
			/* find settings from table node */
			var osettings = _fnsettingsfromnode( this[datatable.ext.iapiindex] );
			
			for ( var i=0 ; i<osettings.aoopenrows.length ; i++ )
			{
				if ( osettings.aoopenrows[i].nparent == ntr )
				{
					var ntrparent = osettings.aoopenrows[i].ntr.parentnode;
					if ( ntrparent )
					{
						/* remove it if it is currently on display */
						ntrparent.removechild( osettings.aoopenrows[i].ntr );
					}
					osettings.aoopenrows.splice( i, 1 );
					return 0;
				}
			}
			return 1;
		};
		
		
		/**
		 * remove a row for the table
		 *  @param {mixed} mtarget the index of the row from aodata to be deleted, or
		 *    the tr element you want to delete
		 *  @param {function|null} [fncallback] callback function
		 *  @param {bool} [bredraw=true] redraw the table or not
		 *  @returns {array} the row that was deleted
		 *  @dtopt api
		 *
		 *  @example
		 *    $(document).ready(function() {
		 *      var otable = $('#example').datatable();
		 *      
		 *      // immediately remove the first row
		 *      otable.fndeleterow( 0 );
		 *    } );
		 */
		this.fndeleterow = function( mtarget, fncallback, bredraw )
		{
			/* find settings from table node */
			var osettings = _fnsettingsfromnode( this[datatable.ext.iapiindex] );
			var i, ilen, iaodataindex;
			
			iaodataindex = (typeof mtarget === 'object') ? 
				_fnnodetodataindex(osettings, mtarget) : mtarget;
			
			/* return the data array from this row */
			var odata = osettings.aodata.splice( iaodataindex, 1 );
		
			/* update the _dt_rowindex parameter */
			for ( i=0, ilen=osettings.aodata.length ; i<ilen ; i++ )
			{
				if ( osettings.aodata[i].ntr !== null )
				{
					osettings.aodata[i].ntr._dt_rowindex = i;
				}
			}
			
			/* remove the target row from the search array */
			var idisplayindex = $.inarray( iaodataindex, osettings.aidisplay );
			osettings.asdatasearch.splice( idisplayindex, 1 );
			
			/* delete from the display arrays */
			_fndeleteindex( osettings.aidisplaymaster, iaodataindex );
			_fndeleteindex( osettings.aidisplay, iaodataindex );
			
			/* if there is a user callback function - call it */
			if ( typeof fncallback === "function" )
			{
				fncallback.call( this, osettings, odata );
			}
			
			/* check for an 'overflow' they case for displaying the table */
			if ( osettings._idisplaystart >= osettings.fnrecordsdisplay() )
			{
				osettings._idisplaystart -= osettings._idisplaylength;
				if ( osettings._idisplaystart < 0 )
				{
					osettings._idisplaystart = 0;
				}
			}
			
			if ( bredraw === undefined || bredraw )
			{
				_fncalculateend( osettings );
				_fndraw( osettings );
			}
			
			return odata;
		};
		
		
		/**
		 * restore the table to it's original state in the dom by removing all of datatables 
		 * enhancements, alterations to the dom structure of the table and event listeners.
		 *  @param {boolean} [bremove=false] completely remove the table from the dom
		 *  @dtopt api
		 *
		 *  @example
		 *    $(document).ready(function() {
		 *      // this example is fairly pointless in reality, but shows how fndestroy can be used
		 *      var otable = $('#example').datatable();
		 *      otable.fndestroy();
		 *    } );
		 */
		this.fndestroy = function ( bremove )
		{
			var osettings = _fnsettingsfromnode( this[datatable.ext.iapiindex] );
			var norig = osettings.ntablewrapper.parentnode;
			var nbody = osettings.ntbody;
			var i, ilen;
		
			bremove = (bremove===undefined) ? false : bremove;
			
			/* flag to note that the table is currently being destroyed - no action should be taken */
			osettings.bdestroying = true;
			
			/* fire off the destroy callbacks for plug-ins etc */
			_fncallbackfire( osettings, "aodestroycallback", "destroy", [osettings] );
		
			/* if the table is not being removed, restore the hidden columns */
			if ( !bremove )
			{
				for ( i=0, ilen=osettings.aocolumns.length ; i<ilen ; i++ )
				{
					if ( osettings.aocolumns[i].bvisible === false )
					{
						this.fnsetcolumnvis( i, true );
					}
				}
			}
			
			/* blitz all dt events */
			$(osettings.ntablewrapper).find('*').andself().unbind('.dt');
			
			/* if there is an 'empty' indicator row, remove it */
			$('tbody>tr>td.'+osettings.oclasses.srowempty, osettings.ntable).parent().remove();
			
			/* when scrolling we had to break the table up - restore it */
			if ( osettings.ntable != osettings.nthead.parentnode )
			{
				$(osettings.ntable).children('thead').remove();
				osettings.ntable.appendchild( osettings.nthead );
			}
			
			if ( osettings.ntfoot && osettings.ntable != osettings.ntfoot.parentnode )
			{
				$(osettings.ntable).children('tfoot').remove();
				osettings.ntable.appendchild( osettings.ntfoot );
			}
			
			/* remove the datatables generated nodes, events and classes */
			osettings.ntable.parentnode.removechild( osettings.ntable );
			$(osettings.ntablewrapper).remove();
			
			osettings.aasorting = [];
			osettings.aasortingfixed = [];
			_fnsortingclasses( osettings );
			
			$(_fngettrnodes( osettings )).removeclass( osettings.asstripeclasses.join(' ') );
			
			$('th, td', osettings.nthead).removeclass( [
				osettings.oclasses.ssortable,
				osettings.oclasses.ssortableasc,
				osettings.oclasses.ssortabledesc,
				osettings.oclasses.ssortablenone ].join(' ')
			);
			if ( osettings.bjui )
			{
				$('th span.'+osettings.oclasses.ssorticon
					+ ', td span.'+osettings.oclasses.ssorticon, osettings.nthead).remove();
		
				$('th, td', osettings.nthead).each( function () {
					var jqwrapper = $('div.'+osettings.oclasses.ssortjuiwrapper, this);
					var kids = jqwrapper.contents();
					$(this).append( kids );
					jqwrapper.remove();
				} );
			}
			
			/* add the tr elements back into the table in their original order */
			if ( !bremove && osettings.ntablereinsertbefore )
			{
				norig.insertbefore( osettings.ntable, osettings.ntablereinsertbefore );
			}
			else if ( !bremove )
			{
				norig.appendchild( osettings.ntable );
			}
		
			for ( i=0, ilen=osettings.aodata.length ; i<ilen ; i++ )
			{
				if ( osettings.aodata[i].ntr !== null )
				{
					nbody.appendchild( osettings.aodata[i].ntr );
				}
			}
			
			/* restore the width of the original table */
			if ( osettings.ofeatures.bautowidth === true )
			{
			  osettings.ntable.style.width = _fnstringtocss(osettings.sdestroywidth);
			}
			
			/* if the were originally stripe classes - then we add them back here. note
			 * this is not fool proof (for example if not all rows had stripe classes - but
			 * it's a good effort without getting carried away
			 */
			ilen = osettings.asdestroystripes.length;
			if (ilen)
			{
				var anrows = $(nbody).children('tr');
				for ( i=0 ; i<ilen ; i++ )
				{
					anrows.filter(':nth-child(' + ilen + 'n + ' + i + ')').addclass( osettings.asdestroystripes[i] );
				}
			}
			
			/* remove the settings object from the settings array */
			for ( i=0, ilen=datatable.settings.length ; i<ilen ; i++ )
			{
				if ( datatable.settings[i] == osettings )
				{
					datatable.settings.splice( i, 1 );
				}
			}
			
			/* end it all */
			osettings = null;
			oinit = null;
		};
		
		
		/**
		 * redraw the table
		 *  @param {bool} [bcomplete=true] re-filter and resort (if enabled) the table before the draw.
		 *  @dtopt api
		 *
		 *  @example
		 *    $(document).ready(function() {
		 *      var otable = $('#example').datatable();
		 *      
		 *      // re-draw the table - you wouldn't want to do it here, but it's an example :-)
		 *      otable.fndraw();
		 *    } );
		 */
		this.fndraw = function( bcomplete )
		{
			var osettings = _fnsettingsfromnode( this[datatable.ext.iapiindex] );
			if ( bcomplete === false )
			{
				_fncalculateend( osettings );
				_fndraw( osettings );
			}
			else
			{
				_fnredraw( osettings );
			}
		};
		
		
		/**
		 * filter the input based on data
		 *  @param {string} sinput string to filter the table on
		 *  @param {int|null} [icolumn] column to limit filtering to
		 *  @param {bool} [bregex=false] treat as regular expression or not
		 *  @param {bool} [bsmart=true] perform smart filtering or not
		 *  @param {bool} [bshowglobal=true] show the input global filter in it's input box(es)
		 *  @param {bool} [bcaseinsensitive=true] do case-insensitive matching (true) or not (false)
		 *  @dtopt api
		 *
		 *  @example
		 *    $(document).ready(function() {
		 *      var otable = $('#example').datatable();
		 *      
		 *      // sometime later - filter...
		 *      otable.fnfilter( 'test string' );
		 *    } );
		 */
		this.fnfilter = function( sinput, icolumn, bregex, bsmart, bshowglobal, bcaseinsensitive )
		{
			var osettings = _fnsettingsfromnode( this[datatable.ext.iapiindex] );
			
			if ( !osettings.ofeatures.bfilter )
			{
				return;
			}
			
			if ( bregex === undefined || bregex === null )
			{
				bregex = false;
			}
			
			if ( bsmart === undefined || bsmart === null )
			{
				bsmart = true;
			}
			
			if ( bshowglobal === undefined || bshowglobal === null )
			{
				bshowglobal = true;
			}
			
			if ( bcaseinsensitive === undefined || bcaseinsensitive === null )
			{
				bcaseinsensitive = true;
			}
			
			if ( icolumn === undefined || icolumn === null )
			{
				/* global filter */
				_fnfiltercomplete( osettings, {
					"ssearch":sinput+"",
					"bregex": bregex,
					"bsmart": bsmart,
					"bcaseinsensitive": bcaseinsensitive
				}, 1 );
				
				if ( bshowglobal && osettings.aanfeatures.f )
				{
					var n = osettings.aanfeatures.f;
					for ( var i=0, ilen=n.length ; i<ilen ; i++ )
					{
						// ie9 throws an 'unknown error' if document.activeelement is used
						// inside an iframe or frame...
						try {
							if ( n[i]._dt_input != document.activeelement )
							{
								$(n[i]._dt_input).val( sinput );
							}
						}
						catch ( e ) {
							$(n[i]._dt_input).val( sinput );
						}
					}
				}
			}
			else
			{
				/* single column filter */
				$.extend( osettings.aopresearchcols[ icolumn ], {
					"ssearch": sinput+"",
					"bregex": bregex,
					"bsmart": bsmart,
					"bcaseinsensitive": bcaseinsensitive
				} );
				_fnfiltercomplete( osettings, osettings.oprevioussearch, 1 );
			}
		};
		
		
		/**
		 * get the data for the whole table, an individual row or an individual cell based on the 
		 * provided parameters.
		 *  @param {int|node} [mrow] a tr row node, td/th cell node or an integer. if given as
		 *    a tr node then the data source for the whole row will be returned. if given as a
		 *    td/th cell node then icol will be automatically calculated and the data for the
		 *    cell returned. if given as an integer, then this is treated as the aodata internal
		 *    data index for the row (see fngetposition) and the data for that row used.
		 *  @param {int} [icol] optional column index that you want the data of.
		 *  @returns {array|object|string} if mrow is undefined, then the data for all rows is
		 *    returned. if mrow is defined, just data for that row, and is icol is
		 *    defined, only data for the designated cell is returned.
		 *  @dtopt api
		 *
		 *  @example
		 *    // row data
		 *    $(document).ready(function() {
		 *      otable = $('#example').datatable();
		 *
		 *      otable.$('tr').click( function () {
		 *        var data = otable.fngetdata( this );
		 *        // ... do something with the array / object of data for the row
		 *      } );
		 *    } );
		 *
		 *  @example
		 *    // individual cell data
		 *    $(document).ready(function() {
		 *      otable = $('#example').datatable();
		 *
		 *      otable.$('td').click( function () {
		 *        var sdata = otable.fngetdata( this );
		 *        alert( 'the cell clicked on had the value of '+sdata );
		 *      } );
		 *    } );
		 */
		this.fngetdata = function( mrow, icol )
		{
			var osettings = _fnsettingsfromnode( this[datatable.ext.iapiindex] );
			
			if ( mrow !== undefined )
			{
				var irow = mrow;
				if ( typeof mrow === 'object' )
				{
					var snode = mrow.nodename.tolowercase();
					if (snode === "tr" )
					{
						irow = _fnnodetodataindex(osettings, mrow);
					}
					else if ( snode === "td" )
					{
						irow = _fnnodetodataindex(osettings, mrow.parentnode);
						icol = _fnnodetocolumnindex( osettings, irow, mrow );
					}
				}
		
				if ( icol !== undefined )
				{
					return _fngetcelldata( osettings, irow, icol, '' );
				}
				return (osettings.aodata[irow]!==undefined) ?
					osettings.aodata[irow]._adata : null;
			}
			return _fngetdatamaster( osettings );
		};
		
		
		/**
		 * get an array of the tr nodes that are used in the table's body. note that you will 
		 * typically want to use the '$' api method in preference to this as it is more 
		 * flexible.
		 *  @param {int} [irow] optional row index for the tr element you want
		 *  @returns {array|node} if irow is undefined, returns an array of all tr elements
		 *    in the table's body, or irow is defined, just the tr element requested.
		 *  @dtopt api
		 *
		 *  @example
		 *    $(document).ready(function() {
		 *      var otable = $('#example').datatable();
		 *      
		 *      // get the nodes from the table
		 *      var nnodes = otable.fngetnodes( );
		 *    } );
		 */
		this.fngetnodes = function( irow )
		{
			var osettings = _fnsettingsfromnode( this[datatable.ext.iapiindex] );
			
			if ( irow !== undefined ) {
				return (osettings.aodata[irow]!==undefined) ?
					osettings.aodata[irow].ntr : null;
			}
			return _fngettrnodes( osettings );
		};
		
		
		/**
		 * get the array indexes of a particular cell from it's dom element
		 * and column index including hidden columns
		 *  @param {node} nnode this can either be a tr, td or th in the table's body
		 *  @returns {int} if nnode is given as a tr, then a single index is returned, or
		 *    if given as a cell, an array of [row index, column index (visible), 
		 *    column index (all)] is given.
		 *  @dtopt api
		 *
		 *  @example
		 *    $(document).ready(function() {
		 *      $('#example tbody td').click( function () {
		 *        // get the position of the current data from the node
		 *        var apos = otable.fngetposition( this );
		 *        
		 *        // get the data array for this row
		 *        var adata = otable.fngetdata( apos[0] );
		 *        
		 *        // update the data array and return the value
		 *        adata[ apos[1] ] = 'clicked';
		 *        this.innerhtml = 'clicked';
		 *      } );
		 *      
		 *      // init datatables
		 *      otable = $('#example').datatable();
		 *    } );
		 */
		this.fngetposition = function( nnode )
		{
			var osettings = _fnsettingsfromnode( this[datatable.ext.iapiindex] );
			var snodename = nnode.nodename.touppercase();
			
			if ( snodename == "tr" )
			{
				return _fnnodetodataindex(osettings, nnode);
			}
			else if ( snodename == "td" || snodename == "th" )
			{
				var idataindex = _fnnodetodataindex( osettings, nnode.parentnode );
				var icolumnindex = _fnnodetocolumnindex( osettings, idataindex, nnode );
				return [ idataindex, _fncolumnindextovisible(osettings, icolumnindex ), icolumnindex ];
			}
			return null;
		};
		
		
		/**
		 * check to see if a row is 'open' or not.
		 *  @param {node} ntr the table row to check
		 *  @returns {boolean} true if the row is currently open, false otherwise
		 *  @dtopt api
		 *
		 *  @example
		 *    $(document).ready(function() {
		 *      var otable;
		 *      
		 *      // 'open' an information row when a row is clicked on
		 *      $('#example tbody tr').click( function () {
		 *        if ( otable.fnisopen(this) ) {
		 *          otable.fnclose( this );
		 *        } else {
		 *          otable.fnopen( this, "temporary row opened", "info_row" );
		 *        }
		 *      } );
		 *      
		 *      otable = $('#example').datatable();
		 *    } );
		 */
		this.fnisopen = function( ntr )
		{
			var osettings = _fnsettingsfromnode( this[datatable.ext.iapiindex] );
			var aoopenrows = osettings.aoopenrows;
			
			for ( var i=0 ; i<osettings.aoopenrows.length ; i++ )
			{
				if ( osettings.aoopenrows[i].nparent == ntr )
				{
					return true;
				}
			}
			return false;
		};
		
		
		/**
		 * this function will place a new row directly after a row which is currently 
		 * on display on the page, with the html contents that is passed into the 
		 * function. this can be used, for example, to ask for confirmation that a 
		 * particular record should be deleted.
		 *  @param {node} ntr the table row to 'open'
		 *  @param {string|node|jquery} mhtml the html to put into the row
		 *  @param {string} sclass class to give the new td cell
		 *  @returns {node} the row opened. note that if the table row passed in as the
		 *    first parameter, is not found in the table, this method will silently
		 *    return.
		 *  @dtopt api
		 *
		 *  @example
		 *    $(document).ready(function() {
		 *      var otable;
		 *      
		 *      // 'open' an information row when a row is clicked on
		 *      $('#example tbody tr').click( function () {
		 *        if ( otable.fnisopen(this) ) {
		 *          otable.fnclose( this );
		 *        } else {
		 *          otable.fnopen( this, "temporary row opened", "info_row" );
		 *        }
		 *      } );
		 *      
		 *      otable = $('#example').datatable();
		 *    } );
		 */
		this.fnopen = function( ntr, mhtml, sclass )
		{
			/* find settings from table node */
			var osettings = _fnsettingsfromnode( this[datatable.ext.iapiindex] );
		
			/* check that the row given is in the table */
			var ntablerows = _fngettrnodes( osettings );
			if ( $.inarray(ntr, ntablerows) === -1 )
			{
				return;
			}
			
			/* the old open one if there is one */
			this.fnclose( ntr );
			
			var nnewrow = document.createelement("tr");
			var nnewcell = document.createelement("td");
			nnewrow.appendchild( nnewcell );
			nnewcell.classname = sclass;
			nnewcell.colspan = _fnvisblecolumns( osettings );
		
			if (typeof mhtml === "string")
			{
				nnewcell.innerhtml = mhtml;
			}
			else
			{
				$(nnewcell).html( mhtml );
			}
		
			/* if the ntr isn't on the page at the moment - then we don't insert at the moment */
			var ntrs = $('tr', osettings.ntbody);
			if ( $.inarray(ntr, ntrs) != -1  )
			{
				$(nnewrow).insertafter(ntr);
			}
			
			osettings.aoopenrows.push( {
				"ntr": nnewrow,
				"nparent": ntr
			} );
			
			return nnewrow;
		};
		
		
		/**
		 * change the pagination - provides the internal logic for pagination in a simple api 
		 * function. with this function you can have a datatables table go to the next, 
		 * previous, first or last pages.
		 *  @param {string|int} maction paging action to take: "first", "previous", "next" or "last"
		 *    or page number to jump to (integer), note that page 0 is the first page.
		 *  @param {bool} [bredraw=true] redraw the table or not
		 *  @dtopt api
		 *
		 *  @example
		 *    $(document).ready(function() {
		 *      var otable = $('#example').datatable();
		 *      otable.fnpagechange( 'next' );
		 *    } );
		 */
		this.fnpagechange = function ( maction, bredraw )
		{
			var osettings = _fnsettingsfromnode( this[datatable.ext.iapiindex] );
			_fnpagechange( osettings, maction );
			_fncalculateend( osettings );
			
			if ( bredraw === undefined || bredraw )
			{
				_fndraw( osettings );
			}
		};
		
		
		/**
		 * show a particular column
		 *  @param {int} icol the column whose display should be changed
		 *  @param {bool} bshow show (true) or hide (false) the column
		 *  @param {bool} [bredraw=true] redraw the table or not
		 *  @dtopt api
		 *
		 *  @example
		 *    $(document).ready(function() {
		 *      var otable = $('#example').datatable();
		 *      
		 *      // hide the second column after initialisation
		 *      otable.fnsetcolumnvis( 1, false );
		 *    } );
		 */
		this.fnsetcolumnvis = function ( icol, bshow, bredraw )
		{
			var osettings = _fnsettingsfromnode( this[datatable.ext.iapiindex] );
			var i, ilen;
			var aocolumns = osettings.aocolumns;
			var aodata = osettings.aodata;
			var ntd, bappend, ibefore;
			
			/* no point in doing anything if we are requesting what is already true */
			if ( aocolumns[icol].bvisible == bshow )
			{
				return;
			}
			
			/* show the column */
			if ( bshow )
			{
				var iinsert = 0;
				for ( i=0 ; i<icol ; i++ )
				{
					if ( aocolumns[i].bvisible )
					{
						iinsert++;
					}
				}
				
				/* need to decide if we should use appendchild or insertbefore */
				bappend = (iinsert >= _fnvisblecolumns( osettings ));
		
				/* which coloumn should we be inserting before? */
				if ( !bappend )
				{
					for ( i=icol ; i<aocolumns.length ; i++ )
					{
						if ( aocolumns[i].bvisible )
						{
							ibefore = i;
							break;
						}
					}
				}
		
				for ( i=0, ilen=aodata.length ; i<ilen ; i++ )
				{
					if ( aodata[i].ntr !== null )
					{
						if ( bappend )
						{
							aodata[i].ntr.appendchild( 
								aodata[i]._anhidden[icol]
							);
						}
						else
						{
							aodata[i].ntr.insertbefore(
								aodata[i]._anhidden[icol], 
								_fngettdnodes( osettings, i )[ibefore] );
						}
					}
				}
			}
			else
			{
				/* remove a column from display */
				for ( i=0, ilen=aodata.length ; i<ilen ; i++ )
				{
					if ( aodata[i].ntr !== null )
					{
						ntd = _fngettdnodes( osettings, i )[icol];
						aodata[i]._anhidden[icol] = ntd;
						ntd.parentnode.removechild( ntd );
					}
				}
			}
		
			/* clear to set the visible flag */
			aocolumns[icol].bvisible = bshow;
		
			/* redraw the header and footer based on the new column visibility */
			_fndrawhead( osettings, osettings.aoheader );
			if ( osettings.ntfoot )
			{
				_fndrawhead( osettings, osettings.aofooter );
			}
			
			/* if there are any 'open' rows, then we need to alter the colspan for this col change */
			for ( i=0, ilen=osettings.aoopenrows.length ; i<ilen ; i++ )
			{
				osettings.aoopenrows[i].ntr.colspan = _fnvisblecolumns( osettings );
			}
			
			/* do a redraw incase anything depending on the table columns needs it 
			 * (built-in: scrolling) 
			 */
			if ( bredraw === undefined || bredraw )
			{
				_fnadjustcolumnsizing( osettings );
				_fndraw( osettings );
			}
			
			_fnsavestate( osettings );
		};
		
		
		/**
		 * get the settings for a particular table for external manipulation
		 *  @returns {object} datatables settings object. see 
		 *    {@link datatable.models.osettings}
		 *  @dtopt api
		 *
		 *  @example
		 *    $(document).ready(function() {
		 *      var otable = $('#example').datatable();
		 *      var osettings = otable.fnsettings();
		 *      
		 *      // show an example parameter from the settings
		 *      alert( osettings._idisplaystart );
		 *    } );
		 */
		this.fnsettings = function()
		{
			return _fnsettingsfromnode( this[datatable.ext.iapiindex] );
		};
		
		
		/**
		 * sort the table by a particular column
		 *  @param {int} icol the data index to sort on. note that this will not match the 
		 *    'display index' if you have hidden data entries
		 *  @dtopt api
		 *
		 *  @example
		 *    $(document).ready(function() {
		 *      var otable = $('#example').datatable();
		 *      
		 *      // sort immediately with columns 0 and 1
		 *      otable.fnsort( [ [0,'asc'], [1,'asc'] ] );
		 *    } );
		 */
		this.fnsort = function( aasort )
		{
			var osettings = _fnsettingsfromnode( this[datatable.ext.iapiindex] );
			osettings.aasorting = aasort;
			_fnsort( osettings );
		};
		
		
		/**
		 * attach a sort listener to an element for a given column
		 *  @param {node} nnode the element to attach the sort listener to
		 *  @param {int} icolumn the column that a click on this node will sort on
		 *  @param {function} [fncallback] callback function when sort is run
		 *  @dtopt api
		 *
		 *  @example
		 *    $(document).ready(function() {
		 *      var otable = $('#example').datatable();
		 *      
		 *      // sort on column 1, when 'sorter' is clicked on
		 *      otable.fnsortlistener( document.getelementbyid('sorter'), 1 );
		 *    } );
		 */
		this.fnsortlistener = function( nnode, icolumn, fncallback )
		{
			_fnsortattachlistener( _fnsettingsfromnode( this[datatable.ext.iapiindex] ), nnode, icolumn,
			 	fncallback );
		};
		
		
		/**
		 * update a table cell or row - this method will accept either a single value to
		 * update the cell with, an array of values with one element for each column or
		 * an object in the same format as the original data source. the function is
		 * self-referencing in order to make the multi column updates easier.
		 *  @param {object|array|string} mdata data to update the cell/row with
		 *  @param {node|int} mrow tr element you want to update or the aodata index
		 *  @param {int} [icolumn] the column to update (not used of mdata is an array or object)
		 *  @param {bool} [bredraw=true] redraw the table or not
		 *  @param {bool} [baction=true] perform pre-draw actions or not
		 *  @returns {int} 0 on success, 1 on error
		 *  @dtopt api
		 *
		 *  @example
		 *    $(document).ready(function() {
		 *      var otable = $('#example').datatable();
		 *      otable.fnupdate( 'example update', 0, 0 ); // single cell
		 *      otable.fnupdate( ['a', 'b', 'c', 'd', 'e'], 1, 0 ); // row
		 *    } );
		 */
		this.fnupdate = function( mdata, mrow, icolumn, bredraw, baction )
		{
			var osettings = _fnsettingsfromnode( this[datatable.ext.iapiindex] );
			var i, ilen, sdisplay;
			var irow = (typeof mrow === 'object') ? 
				_fnnodetodataindex(osettings, mrow) : mrow;
			
			if ( $.isarray(mdata) && icolumn === undefined )
			{
				/* array update - update the whole row */
				osettings.aodata[irow]._adata = mdata.slice();
				
				/* flag to the function that we are recursing */
				for ( i=0 ; i<osettings.aocolumns.length ; i++ )
				{
					this.fnupdate( _fngetcelldata( osettings, irow, i ), irow, i, false, false );
				}
			}
			else if ( $.isplainobject(mdata) && icolumn === undefined )
			{
				/* object update - update the whole row - assume the developer gets the object right */
				osettings.aodata[irow]._adata = $.extend( true, {}, mdata );
		
				for ( i=0 ; i<osettings.aocolumns.length ; i++ )
				{
					this.fnupdate( _fngetcelldata( osettings, irow, i ), irow, i, false, false );
				}
			}
			else
			{
				/* individual cell update */
				_fnsetcelldata( osettings, irow, icolumn, mdata );
				sdisplay = _fngetcelldata( osettings, irow, icolumn, 'display' );
				
				var ocol = osettings.aocolumns[icolumn];
				if ( ocol.fnrender !== null )
				{
					sdisplay = _fnrender( osettings, irow, icolumn );
					if ( ocol.buserendered )
					{
						_fnsetcelldata( osettings, irow, icolumn, sdisplay );
					}
				}
				
				if ( osettings.aodata[irow].ntr !== null )
				{
					/* do the actual html update */
					_fngettdnodes( osettings, irow )[icolumn].innerhtml = sdisplay;
				}
			}
			
			/* modify the search index for this row (strictly this is likely not needed, since fnredraw
			 * will rebuild the search array - however, the redraw might be disabled by the user)
			 */
			var idisplayindex = $.inarray( irow, osettings.aidisplay );
			osettings.asdatasearch[idisplayindex] = _fnbuildsearchrow(
				osettings, 
				_fngetrowdata( osettings, irow, 'filter', _fngetcolumns( osettings, 'bsearchable' ) )
			);
			
			/* perform pre-draw actions */
			if ( baction === undefined || baction )
			{
				_fnadjustcolumnsizing( osettings );
			}
			
			/* redraw the table */
			if ( bredraw === undefined || bredraw )
			{
				_fnredraw( osettings );
			}
			return 0;
		};
		
		
		/**
		 * provide a common method for plug-ins to check the version of datatables being used, in order
		 * to ensure compatibility.
		 *  @param {string} sversion version string to check for, in the format "x.y.z". note that the
		 *    formats "x" and "x.y" are also acceptable.
		 *  @returns {boolean} true if this version of datatables is greater or equal to the required
		 *    version, or false if this version of datatales is not suitable
		 *  @method
		 *  @dtopt api
		 *
		 *  @example
		 *    $(document).ready(function() {
		 *      var otable = $('#example').datatable();
		 *      alert( otable.fnversioncheck( '1.9.0' ) );
		 *    } );
		 */
		this.fnversioncheck = datatable.ext.fnversioncheck;
		
		
		/*
		 * this is really a good bit rubbish this method of exposing the internal methods
		 * publicly... - to be fixed in 2.0 using methods on the prototype
		 */
		
		
		/**
		 * create a wrapper function for exporting an internal functions to an external api.
		 *  @param {string} sfunc api function name
		 *  @returns {function} wrapped function
		 *  @memberof datatable#oapi
		 */
		function _fnexternapifunc (sfunc)
		{
			return function() {
				var aargs = [_fnsettingsfromnode(this[datatable.ext.iapiindex])].concat( 
					array.prototype.slice.call(arguments) );
				return datatable.ext.oapi[sfunc].apply( this, aargs );
			};
		}
		
		
		/**
		 * reference to internal functions for use by plug-in developers. note that these
		 * methods are references to internal functions and are considered to be private.
		 * if you use these methods, be aware that they are liable to change between versions
		 * (check the upgrade notes).
		 *  @namespace
		 */
		this.oapi = {
			"_fnexternapifunc": _fnexternapifunc,
			"_fninitialise": _fninitialise,
			"_fninitcomplete": _fninitcomplete,
			"_fnlanguagecompat": _fnlanguagecompat,
			"_fnaddcolumn": _fnaddcolumn,
			"_fncolumnoptions": _fncolumnoptions,
			"_fnadddata": _fnadddata,
			"_fncreatetr": _fncreatetr,
			"_fngatherdata": _fngatherdata,
			"_fnbuildhead": _fnbuildhead,
			"_fndrawhead": _fndrawhead,
			"_fndraw": _fndraw,
			"_fnredraw": _fnredraw,
			"_fnajaxupdate": _fnajaxupdate,
			"_fnajaxparameters": _fnajaxparameters,
			"_fnajaxupdatedraw": _fnajaxupdatedraw,
			"_fnserverparams": _fnserverparams,
			"_fnaddoptionshtml": _fnaddoptionshtml,
			"_fnfeaturehtmltable": _fnfeaturehtmltable,
			"_fnscrolldraw": _fnscrolldraw,
			"_fnadjustcolumnsizing": _fnadjustcolumnsizing,
			"_fnfeaturehtmlfilter": _fnfeaturehtmlfilter,
			"_fnfiltercomplete": _fnfiltercomplete,
			"_fnfiltercustom": _fnfiltercustom,
			"_fnfiltercolumn": _fnfiltercolumn,
			"_fnfilter": _fnfilter,
			"_fnbuildsearcharray": _fnbuildsearcharray,
			"_fnbuildsearchrow": _fnbuildsearchrow,
			"_fnfiltercreatesearch": _fnfiltercreatesearch,
			"_fndatatosearch": _fndatatosearch,
			"_fnsort": _fnsort,
			"_fnsortattachlistener": _fnsortattachlistener,
			"_fnsortingclasses": _fnsortingclasses,
			"_fnfeaturehtmlpaginate": _fnfeaturehtmlpaginate,
			"_fnpagechange": _fnpagechange,
			"_fnfeaturehtmlinfo": _fnfeaturehtmlinfo,
			"_fnupdateinfo": _fnupdateinfo,
			"_fnfeaturehtmllength": _fnfeaturehtmllength,
			"_fnfeaturehtmlprocessing": _fnfeaturehtmlprocessing,
			"_fnprocessingdisplay": _fnprocessingdisplay,
			"_fnvisibletocolumnindex": _fnvisibletocolumnindex,
			"_fncolumnindextovisible": _fncolumnindextovisible,
			"_fnnodetodataindex": _fnnodetodataindex,
			"_fnvisblecolumns": _fnvisblecolumns,
			"_fncalculateend": _fncalculateend,
			"_fnconverttowidth": _fnconverttowidth,
			"_fncalculatecolumnwidths": _fncalculatecolumnwidths,
			"_fnscrollingwidthadjust": _fnscrollingwidthadjust,
			"_fngetwidestnode": _fngetwidestnode,
			"_fngetmaxlenstring": _fngetmaxlenstring,
			"_fnstringtocss": _fnstringtocss,
			"_fndetecttype": _fndetecttype,
			"_fnsettingsfromnode": _fnsettingsfromnode,
			"_fngetdatamaster": _fngetdatamaster,
			"_fngettrnodes": _fngettrnodes,
			"_fngettdnodes": _fngettdnodes,
			"_fnescaperegex": _fnescaperegex,
			"_fndeleteindex": _fndeleteindex,
			"_fnreorderindex": _fnreorderindex,
			"_fncolumnordering": _fncolumnordering,
			"_fnlog": _fnlog,
			"_fncleartable": _fncleartable,
			"_fnsavestate": _fnsavestate,
			"_fnloadstate": _fnloadstate,
			"_fncreatecookie": _fncreatecookie,
			"_fnreadcookie": _fnreadcookie,
			"_fndetectheader": _fndetectheader,
			"_fngetuniqueths": _fngetuniqueths,
			"_fnscrollbarwidth": _fnscrollbarwidth,
			"_fnapplytochildren": _fnapplytochildren,
			"_fnmap": _fnmap,
			"_fngetrowdata": _fngetrowdata,
			"_fngetcelldata": _fngetcelldata,
			"_fnsetcelldata": _fnsetcelldata,
			"_fngetobjectdatafn": _fngetobjectdatafn,
			"_fnsetobjectdatafn": _fnsetobjectdatafn,
			"_fnapplycolumndefs": _fnapplycolumndefs,
			"_fnbindaction": _fnbindaction,
			"_fnextend": _fnextend,
			"_fncallbackreg": _fncallbackreg,
			"_fncallbackfire": _fncallbackfire,
			"_fnjsonstring": _fnjsonstring,
			"_fnrender": _fnrender,
			"_fnnodetocolumnindex": _fnnodetocolumnindex,
			"_fninfomacros": _fninfomacros,
			"_fnbrowserdetect": _fnbrowserdetect,
			"_fngetcolumns": _fngetcolumns
		};
		
		$.extend( datatable.ext.oapi, this.oapi );
		
		for ( var sfunc in datatable.ext.oapi )
		{
			if ( sfunc )
			{
				this[sfunc] = _fnexternapifunc(sfunc);
			}
		}
		
		
		var _that = this;
		this.each(function() {
			var i=0, ilen, j, jlen, k, klen;
			var sid = this.getattribute( 'id' );
			var binithandedoff = false;
			var busepasseddata = false;
			
			
			/* sanity check */
			if ( this.nodename.tolowercase() != 'table' )
			{
				_fnlog( null, 0, "attempted to initialise datatables on a node which is not a "+
					"table: "+this.nodename );
				return;
			}
			
			/* check to see if we are re-initialising a table */
			for ( i=0, ilen=datatable.settings.length ; i<ilen ; i++ )
			{
				/* base check on table node */
				if ( datatable.settings[i].ntable == this )
				{
					if ( oinit === undefined || oinit.bretrieve )
					{
						return datatable.settings[i].oinstance;
					}
					else if ( oinit.bdestroy )
					{
						datatable.settings[i].oinstance.fndestroy();
						break;
					}
					else
					{
						_fnlog( datatable.settings[i], 0, "cannot reinitialise datatable.\n\n"+
							"to retrieve the datatables object for this table, pass no arguments or see "+
							"the docs for bretrieve and bdestroy" );
						return;
					}
				}
				
				/* if the element we are initialising has the same id as a table which was previously
				 * initialised, but the table nodes don't match (from before) then we destroy the old
				 * instance by simply deleting it. this is under the assumption that the table has been
				 * destroyed by other methods. anyone using non-id selectors will need to do this manually
				 */
				if ( datatable.settings[i].stableid == this.id )
				{
					datatable.settings.splice( i, 1 );
					break;
				}
			}
			
			/* ensure the table has an id - required for accessibility */
			if ( sid === null || sid === "" )
			{
				sid = "datatables_table_"+(datatable.ext._oexternconfig.inextunique++);
				this.id = sid;
			}
			
			/* create the settings object for this table and set some of the default parameters */
			var osettings = $.extend( true, {}, datatable.models.osettings, {
				"ntable":        this,
				"oapi":          _that.oapi,
				"oinit":         oinit,
				"sdestroywidth": $(this).width(),
				"sinstance":     sid,
				"stableid":      sid
			} );
			datatable.settings.push( osettings );
			
			// need to add the instance after the instance after the settings object has been added
			// to the settings array, so we can self reference the table instance if more than one
			osettings.oinstance = (_that.length===1) ? _that : $(this).datatable();
			
			/* setting up the initialisation object */
			if ( !oinit )
			{
				oinit = {};
			}
			
			// backwards compatibility, before we apply all the defaults
			if ( oinit.olanguage )
			{
				_fnlanguagecompat( oinit.olanguage );
			}
			
			oinit = _fnextend( $.extend(true, {}, datatable.defaults), oinit );
			
			// map the initialisation options onto the settings object
			_fnmap( osettings.ofeatures, oinit, "bpaginate" );
			_fnmap( osettings.ofeatures, oinit, "blengthchange" );
			_fnmap( osettings.ofeatures, oinit, "bfilter" );
			_fnmap( osettings.ofeatures, oinit, "bsort" );
			_fnmap( osettings.ofeatures, oinit, "binfo" );
			_fnmap( osettings.ofeatures, oinit, "bprocessing" );
			_fnmap( osettings.ofeatures, oinit, "bautowidth" );
			_fnmap( osettings.ofeatures, oinit, "bsortclasses" );
			_fnmap( osettings.ofeatures, oinit, "bserverside" );
			_fnmap( osettings.ofeatures, oinit, "bdeferrender" );
			_fnmap( osettings.oscroll, oinit, "sscrollx", "sx" );
			_fnmap( osettings.oscroll, oinit, "sscrollxinner", "sxinner" );
			_fnmap( osettings.oscroll, oinit, "sscrolly", "sy" );
			_fnmap( osettings.oscroll, oinit, "bscrollcollapse", "bcollapse" );
			_fnmap( osettings.oscroll, oinit, "bscrollinfinite", "binfinite" );
			_fnmap( osettings.oscroll, oinit, "iscrollloadgap", "iloadgap" );
			_fnmap( osettings.oscroll, oinit, "bscrollautocss", "bautocss" );
			_fnmap( osettings, oinit, "asstripeclasses" );
			_fnmap( osettings, oinit, "asstripclasses", "asstripeclasses" ); // legacy
			_fnmap( osettings, oinit, "fnserverdata" );
			_fnmap( osettings, oinit, "fnformatnumber" );
			_fnmap( osettings, oinit, "sservermethod" );
			_fnmap( osettings, oinit, "aasorting" );
			_fnmap( osettings, oinit, "aasortingfixed" );
			_fnmap( osettings, oinit, "alengthmenu" );
			_fnmap( osettings, oinit, "spaginationtype" );
			_fnmap( osettings, oinit, "sajaxsource" );
			_fnmap( osettings, oinit, "sajaxdataprop" );
			_fnmap( osettings, oinit, "icookieduration" );
			_fnmap( osettings, oinit, "scookieprefix" );
			_fnmap( osettings, oinit, "sdom" );
			_fnmap( osettings, oinit, "bsortcellstop" );
			_fnmap( osettings, oinit, "itabindex" );
			_fnmap( osettings, oinit, "osearch", "oprevioussearch" );
			_fnmap( osettings, oinit, "aosearchcols", "aopresearchcols" );
			_fnmap( osettings, oinit, "idisplaylength", "_idisplaylength" );
			_fnmap( osettings, oinit, "bjqueryui", "bjui" );
			_fnmap( osettings, oinit, "fncookiecallback" );
			_fnmap( osettings, oinit, "fnstateload" );
			_fnmap( osettings, oinit, "fnstatesave" );
			_fnmap( osettings.olanguage, oinit, "fninfocallback" );
			
			/* callback functions which are array driven */
			_fncallbackreg( osettings, 'aodrawcallback',       oinit.fndrawcallback,      'user' );
			_fncallbackreg( osettings, 'aoserverparams',       oinit.fnserverparams,      'user' );
			_fncallbackreg( osettings, 'aostatesaveparams',    oinit.fnstatesaveparams,   'user' );
			_fncallbackreg( osettings, 'aostateloadparams',    oinit.fnstateloadparams,   'user' );
			_fncallbackreg( osettings, 'aostateloaded',        oinit.fnstateloaded,       'user' );
			_fncallbackreg( osettings, 'aorowcallback',        oinit.fnrowcallback,       'user' );
			_fncallbackreg( osettings, 'aorowcreatedcallback', oinit.fncreatedrow,        'user' );
			_fncallbackreg( osettings, 'aoheadercallback',     oinit.fnheadercallback,    'user' );
			_fncallbackreg( osettings, 'aofootercallback',     oinit.fnfootercallback,    'user' );
			_fncallbackreg( osettings, 'aoinitcomplete',       oinit.fninitcomplete,      'user' );
			_fncallbackreg( osettings, 'aopredrawcallback',    oinit.fnpredrawcallback,   'user' );
			
			if ( osettings.ofeatures.bserverside && osettings.ofeatures.bsort &&
				   osettings.ofeatures.bsortclasses )
			{
				/* enable sort classes for server-side processing. safe to do it here, since server-side
				 * processing must be enabled by the developer
				 */
				_fncallbackreg( osettings, 'aodrawcallback', _fnsortingclasses, 'server_side_sort_classes' );
			}
			else if ( osettings.ofeatures.bdeferrender )
			{
				_fncallbackreg( osettings, 'aodrawcallback', _fnsortingclasses, 'defer_sort_classes' );
			}
			
			if ( oinit.bjqueryui )
			{
				/* use the jui classes object for display. you could clone the ostdclasses object if 
				 * you want to have multiple tables with multiple independent classes 
				 */
				$.extend( osettings.oclasses, datatable.ext.ojuiclasses );
				
				if ( oinit.sdom === datatable.defaults.sdom && datatable.defaults.sdom === "lfrtip" )
				{
					/* set the dom to use a layout suitable for jquery ui's theming */
					osettings.sdom = '<"h"lfr>t<"f"ip>';
				}
			}
			else
			{
				$.extend( osettings.oclasses, datatable.ext.ostdclasses );
			}
			$(this).addclass( osettings.oclasses.stable );
			
			/* calculate the scroll bar width and cache it for use later on */
			if ( osettings.oscroll.sx !== "" || osettings.oscroll.sy !== "" )
			{
				osettings.oscroll.ibarwidth = _fnscrollbarwidth();
			}
			
			if ( osettings.iinitdisplaystart === undefined )
			{
				/* display start point, taking into account the save saving */
				osettings.iinitdisplaystart = oinit.idisplaystart;
				osettings._idisplaystart = oinit.idisplaystart;
			}
			
			/* must be done after everything which can be overridden by a cookie! */
			if ( oinit.bstatesave )
			{
				osettings.ofeatures.bstatesave = true;
				_fnloadstate( osettings, oinit );
				_fncallbackreg( osettings, 'aodrawcallback', _fnsavestate, 'state_save' );
			}
			
			if ( oinit.ideferloading !== null )
			{
				osettings.bdeferloading = true;
				var tmp = $.isarray( oinit.ideferloading );
				osettings._irecordsdisplay = tmp ? oinit.ideferloading[0] : oinit.ideferloading;
				osettings._irecordstotal = tmp ? oinit.ideferloading[1] : oinit.ideferloading;
			}
			
			if ( oinit.aadata !== null )
			{
				busepasseddata = true;
			}
			
			/* language definitions */
			if ( oinit.olanguage.surl !== "" )
			{
				/* get the language definitions from a file - because this ajax call makes the language
				 * get async to the remainder of this function we use binithandedoff to indicate that 
				 * _fninitialise will be fired by the returned ajax handler, rather than the constructor
				 */
				osettings.olanguage.surl = oinit.olanguage.surl;
				$.getjson( osettings.olanguage.surl, null, function( json ) {
					_fnlanguagecompat( json );
					$.extend( true, osettings.olanguage, oinit.olanguage, json );
					_fninitialise( osettings );
				} );
				binithandedoff = true;
			}
			else
			{
				$.extend( true, osettings.olanguage, oinit.olanguage );
			}
			
			
			/*
			 * stripes
			 */
			if ( oinit.asstripeclasses === null )
			{
				osettings.asstripeclasses =[
					osettings.oclasses.sstripeodd,
					osettings.oclasses.sstripeeven
				];
			}
			
			/* remove row stripe classes if they are already on the table row */
			ilen=osettings.asstripeclasses.length;
			osettings.asdestroystripes = [];
			if (ilen)
			{
				var bstriperemove = false;
				var anrows = $(this).children('tbody').children('tr:lt(' + ilen + ')');
				for ( i=0 ; i<ilen ; i++ )
				{
					if ( anrows.hasclass( osettings.asstripeclasses[i] ) )
					{
						bstriperemove = true;
						
						/* store the classes which we are about to remove so they can be re-added on destroy */
						osettings.asdestroystripes.push( osettings.asstripeclasses[i] );
					}
				}
				
				if ( bstriperemove )
				{
					anrows.removeclass( osettings.asstripeclasses.join(' ') );
				}
			}
			
			/*
			 * columns
			 * see if we should load columns automatically or use defined ones
			 */
			var anths = [];
			var aocolumnsinit;
			var nthead = this.getelementsbytagname('thead');
			if ( nthead.length !== 0 )
			{
				_fndetectheader( osettings.aoheader, nthead[0] );
				anths = _fngetuniqueths( osettings );
			}
			
			/* if not given a column array, generate one with nulls */
			if ( oinit.aocolumns === null )
			{
				aocolumnsinit = [];
				for ( i=0, ilen=anths.length ; i<ilen ; i++ )
				{
					aocolumnsinit.push( null );
				}
			}
			else
			{
				aocolumnsinit = oinit.aocolumns;
			}
			
			/* add the columns */
			for ( i=0, ilen=aocolumnsinit.length ; i<ilen ; i++ )
			{
				/* short cut - use the loop to check if we have column visibility state to restore */
				if ( oinit.saved_aocolumns !== undefined && oinit.saved_aocolumns.length == ilen )
				{
					if ( aocolumnsinit[i] === null )
					{
						aocolumnsinit[i] = {};
					}
					aocolumnsinit[i].bvisible = oinit.saved_aocolumns[i].bvisible;
				}
				
				_fnaddcolumn( osettings, anths ? anths[i] : null );
			}
			
			/* apply the column definitions */
			_fnapplycolumndefs( osettings, oinit.aocolumndefs, aocolumnsinit, function (icol, odef) {
				_fncolumnoptions( osettings, icol, odef );
			} );
			
			
			/*
			 * sorting
			 * check the aasorting array
			 */
			for ( i=0, ilen=osettings.aasorting.length ; i<ilen ; i++ )
			{
				if ( osettings.aasorting[i][0] >= osettings.aocolumns.length )
				{
					osettings.aasorting[i][0] = 0;
				}
				var ocolumn = osettings.aocolumns[ osettings.aasorting[i][0] ];
				
				/* add a default sorting index */
				if ( osettings.aasorting[i][2] === undefined )
				{
					osettings.aasorting[i][2] = 0;
				}
				
				/* if aasorting is not defined, then we use the first indicator in assorting */
				if ( oinit.aasorting === undefined && osettings.saved_aasorting === undefined )
				{
					osettings.aasorting[i][1] = ocolumn.assorting[0];
				}
				
				/* set the current sorting index based on aocolumns.assorting */
				for ( j=0, jlen=ocolumn.assorting.length ; j<jlen ; j++ )
				{
					if ( osettings.aasorting[i][1] == ocolumn.assorting[j] )
					{
						osettings.aasorting[i][2] = j;
						break;
					}
				}
			}
				
			/* do a first pass on the sorting classes (allows any size changes to be taken into
			 * account, and also will apply sorting disabled classes if disabled
			 */
			_fnsortingclasses( osettings );
			
			
			/*
			 * final init
			 * cache the header, body and footer as required, creating them if needed
			 */
			
			/* browser support detection */
			_fnbrowserdetect( osettings );
			
			// work around for webkit bug 83867 - store the caption-side before removing from doc
			var captions = $(this).children('caption').each( function () {
				this._captionside = $(this).css('caption-side');
			} );
			
			var thead = $(this).children('thead');
			if ( thead.length === 0 )
			{
				thead = [ document.createelement( 'thead' ) ];
				this.appendchild( thead[0] );
			}
			osettings.nthead = thead[0];
			
			var tbody = $(this).children('tbody');
			if ( tbody.length === 0 )
			{
				tbody = [ document.createelement( 'tbody' ) ];
				this.appendchild( tbody[0] );
			}
			osettings.ntbody = tbody[0];
			osettings.ntbody.setattribute( "role", "alert" );
			osettings.ntbody.setattribute( "aria-live", "polite" );
			osettings.ntbody.setattribute( "aria-relevant", "all" );
			
			var tfoot = $(this).children('tfoot');
			if ( tfoot.length === 0 && captions.length > 0 && (osettings.oscroll.sx !== "" || osettings.oscroll.sy !== "") )
			{
				// if we are a scrolling table, and no footer has been given, then we need to create
				// a tfoot element for the caption element to be appended to
				tfoot = [ document.createelement( 'tfoot' ) ];
				this.appendchild( tfoot[0] );
			}
			
			if ( tfoot.length > 0 )
			{
				osettings.ntfoot = tfoot[0];
				_fndetectheader( osettings.aofooter, osettings.ntfoot );
			}
			
			/* check if there is data passing into the constructor */
			if ( busepasseddata )
			{
				for ( i=0 ; i<oinit.aadata.length ; i++ )
				{
					_fnadddata( osettings, oinit.aadata[ i ] );
				}
			}
			else
			{
				/* grab the data from the page */
				_fngatherdata( osettings );
			}
			
			/* copy the data index array */
			osettings.aidisplay = osettings.aidisplaymaster.slice();
			
			/* initialisation complete - table can be drawn */
			osettings.binitialised = true;
			
			/* check if we need to initialise the table (it might not have been handed off to the
			 * language processor)
			 */
			if ( binithandedoff === false )
			{
				_fninitialise( osettings );
			}
		} );
		_that = null;
		return this;
	};

	
	
	/**
	 * provide a common method for plug-ins to check the version of datatables being used, in order
	 * to ensure compatibility.
	 *  @param {string} sversion version string to check for, in the format "x.y.z". note that the
	 *    formats "x" and "x.y" are also acceptable.
	 *  @returns {boolean} true if this version of datatables is greater or equal to the required
	 *    version, or false if this version of datatales is not suitable
	 *  @static
	 *  @dtopt api-static
	 *
	 *  @example
	 *    alert( $.fn.datatable.fnversioncheck( '1.9.0' ) );
	 */
	datatable.fnversioncheck = function( sversion )
	{
		/* this is cheap, but effective */
		var fnzpad = function (zpad, count)
		{
			while(zpad.length < count) {
				zpad += '0';
			}
			return zpad;
		};
		var athis = datatable.ext.sversion.split('.');
		var athat = sversion.split('.');
		var sthis = '', sthat = '';
		
		for ( var i=0, ilen=athat.length ; i<ilen ; i++ )
		{
			sthis += fnzpad( athis[i], 3 );
			sthat += fnzpad( athat[i], 3 );
		}
		
		return parseint(sthis, 10) >= parseint(sthat, 10);
	};
	
	
	/**
	 * check if a table node is a datatable table already or not.
	 *  @param {node} ntable the table node to check if it is a datatable or not (note that other
	 *    node types can be passed in, but will always return false).
	 *  @returns {boolean} true the table given is a datatable, or false otherwise
	 *  @static
	 *  @dtopt api-static
	 *
	 *  @example
	 *    var ex = document.getelementbyid('example');
	 *    if ( ! $.fn.datatable.fnisdatatable( ex ) ) {
	 *      $(ex).datatable();
	 *    }
	 */
	datatable.fnisdatatable = function ( ntable )
	{
		var o = datatable.settings;
	
		for ( var i=0 ; i<o.length ; i++ )
		{
			if ( o[i].ntable === ntable || o[i].nscrollhead === ntable || o[i].nscrollfoot === ntable )
			{
				return true;
			}
		}
	
		return false;
	};
	
	
	/**
	 * get all datatable tables that have been initialised - optionally you can select to
	 * get only currently visible tables.
	 *  @param {boolean} [bvisible=false] flag to indicate if you want all (default) or 
	 *    visible tables only.
	 *  @returns {array} array of table nodes (not datatable instances) which are datatables
	 *  @static
	 *  @dtopt api-static
	 *
	 *  @example
	 *    var table = $.fn.datatable.fntables(true);
	 *    if ( table.length > 0 ) {
	 *      $(table).datatable().fnadjustcolumnsizing();
	 *    }
	 */
	datatable.fntables = function ( bvisible )
	{
		var out = [];
	
		jquery.each( datatable.settings, function (i, o) {
			if ( !bvisible || (bvisible === true && $(o.ntable).is(':visible')) )
			{
				out.push( o.ntable );
			}
		} );
	
		return out;
	};
	

	/**
	 * version string for plug-ins to check compatibility. allowed format is
	 * a.b.c.d.e where: a:int, b:int, c:int, d:string(dev|beta), e:int. d and
	 * e are optional
	 *  @member
	 *  @type string
	 *  @default version number
	 */
	datatable.version = "1.9.4";

	/**
	 * private data store, containing all of the settings objects that are created for the
	 * tables on a given page.
	 * 
	 * note that the <i>datatable.settings</i> object is aliased to <i>jquery.fn.datatableext</i> 
	 * through which it may be accessed and manipulated, or <i>jquery.fn.datatable.settings</i>.
	 *  @member
	 *  @type array
	 *  @default []
	 *  @private
	 */
	datatable.settings = [];

	/**
	 * object models container, for the various models that datatables has available
	 * to it. these models define the objects that are used to hold the active state 
	 * and configuration of the table.
	 *  @namespace
	 */
	datatable.models = {};
	
	
	/**
	 * datatables extension options and plug-ins. this namespace acts as a collection "area"
	 * for plug-ins that can be used to extend the default datatables behaviour - indeed many
	 * of the build in methods use this method to provide their own capabilities (sorting methods
	 * for example).
	 * 
	 * note that this namespace is aliased to jquery.fn.datatableext so it can be readily accessed
	 * and modified by plug-ins.
	 *  @namespace
	 */
	datatable.models.ext = {
		/**
		 * plug-in filtering functions - this method of filtering is complimentary to the default
		 * type based filtering, and a lot more comprehensive as it allows you complete control
		 * over the filtering logic. each element in this array is a function (parameters
		 * described below) that is called for every row in the table, and your logic decides if
		 * it should be included in the filtered data set or not.
		 *   <ul>
		 *     <li>
		 *       function input parameters:
		 *       <ul>
		 *         <li>{object} datatables settings object: see {@link datatable.models.osettings}.</li>
		 *         <li>{array|object} data for the row to be processed (same as the original format
		 *           that was passed in as the data source, or an array from a dom data source</li>
		 *         <li>{int} row index in aodata ({@link datatable.models.osettings.aodata}), which can
		 *           be useful to retrieve the tr element if you need dom interaction.</li>
		 *       </ul>
		 *     </li>
		 *     <li>
		 *       function return:
		 *       <ul>
		 *         <li>{boolean} include the row in the filtered result set (true) or not (false)</li>
		 *       </ul>
		 *     </il>
		 *   </ul>
		 *  @type array
		 *  @default []
		 *
		 *  @example
		 *    // the following example shows custom filtering being applied to the fourth column (i.e.
		 *    // the adata[3] index) based on two input values from the end-user, matching the data in 
		 *    // a certain range.
		 *    $.fn.datatableext.afnfiltering.push(
		 *      function( osettings, adata, idataindex ) {
		 *        var imin = document.getelementbyid('min').value * 1;
		 *        var imax = document.getelementbyid('max').value * 1;
		 *        var iversion = adata[3] == "-" ? 0 : adata[3]*1;
		 *        if ( imin == "" && imax == "" ) {
		 *          return true;
		 *        }
		 *        else if ( imin == "" && iversion < imax ) {
		 *          return true;
		 *        }
		 *        else if ( imin < iversion && "" == imax ) {
		 *          return true;
		 *        }
		 *        else if ( imin < iversion && iversion < imax ) {
		 *          return true;
		 *        }
		 *        return false;
		 *      }
		 *    );
		 */
		"afnfiltering": [],
	
	
		/**
		 * plug-in sorting functions - this method of sorting is complimentary to the default type
		 * based sorting that datatables does automatically, allowing much greater control over the
		 * the data that is being used to sort a column. this is useful if you want to do sorting
		 * based on live data (for example the contents of an 'input' element) rather than just the
		 * static string that datatables knows of. the way these plug-ins work is that you create
		 * an array of the values you wish to be sorted for the column in question and then return
		 * that array. which pre-sorting function is run here depends on the ssortdatatype parameter
		 * that is used for the column (if any). this is the corollary of <i>ofnsearch</i> for sort 
		 * data.
		 *   <ul>
	     *     <li>
	     *       function input parameters:
	     *       <ul>
		 *         <li>{object} datatables settings object: see {@link datatable.models.osettings}.</li>
	     *         <li>{int} target column index</li>
	     *       </ul>
	     *     </li>
		 *     <li>
		 *       function return:
		 *       <ul>
		 *         <li>{array} data for the column to be sorted upon</li>
		 *       </ul>
		 *     </il>
		 *   </ul>
		 *  
		 * note that as of v1.9, it is typically preferable to use <i>mdata</i> to prepare data for
		 * the different uses that datatables can put the data to. specifically <i>mdata</i> when
		 * used as a function will give you a 'type' (sorting, filtering etc) that you can use to 
		 * prepare the data as required for the different types. as such, this method is deprecated.
		 *  @type array
		 *  @default []
		 *  @deprecated
		 *
		 *  @example
		 *    // updating the cached sorting information with user entered values in html input elements
		 *    jquery.fn.datatableext.afnsortdata['dom-text'] = function ( osettings, icolumn )
		 *    {
		 *      var adata = [];
		 *      $( 'td:eq('+icolumn+') input', osettings.oapi._fngettrnodes(osettings) ).each( function () {
		 *        adata.push( this.value );
		 *      } );
		 *      return adata;
		 *    }
		 */
		"afnsortdata": [],
	
	
		/**
		 * feature plug-ins - this is an array of objects which describe the feature plug-ins that are
		 * available to datatables. these feature plug-ins are accessible through the sdom initialisation
		 * option. as such, each feature plug-in must describe a function that is used to initialise
		 * itself (fninit), a character so the feature can be enabled by sdom (cfeature) and the name
		 * of the feature (sfeature). thus the objects attached to this method must provide:
		 *   <ul>
		 *     <li>{function} fninit initialisation of the plug-in
		 *       <ul>
	     *         <li>
	     *           function input parameters:
	     *           <ul>
		 *             <li>{object} datatables settings object: see {@link datatable.models.osettings}.</li>
	     *           </ul>
	     *         </li>
		 *         <li>
		 *           function return:
		 *           <ul>
		 *             <li>{node|null} the element which contains your feature. note that the return
		 *                may also be void if your plug-in does not require to inject any dom elements 
		 *                into datatables control (sdom) - for example this might be useful when 
		 *                developing a plug-in which allows table control via keyboard entry.</li>
		 *           </ul>
		 *         </il>
		 *       </ul>
		 *     </li>
		 *     <li>{character} cfeature character that will be matched in sdom - case sensitive</li>
		 *     <li>{string} sfeature feature name</li>
		 *   </ul>
		 *  @type array
		 *  @default []
		 * 
		 *  @example
		 *    // how tabletools initialises itself.
		 *    $.fn.datatableext.aofeatures.push( {
		 *      "fninit": function( osettings ) {
		 *        return new tabletools( { "odtsettings": osettings } );
		 *      },
		 *      "cfeature": "t",
		 *      "sfeature": "tabletools"
		 *    } );
		 */
		"aofeatures": [],
	
	
		/**
		 * type detection plug-in functions - datatables utilises types to define how sorting and
		 * filtering behave, and types can be either  be defined by the developer (stype for the
		 * column) or they can be automatically detected by the methods in this array. the functions
		 * defined in the array are quite simple, taking a single parameter (the data to analyse) 
		 * and returning the type if it is a known type, or null otherwise.
		 *   <ul>
	     *     <li>
	     *       function input parameters:
	     *       <ul>
		 *         <li>{*} data from the column cell to be analysed</li>
	     *       </ul>
	     *     </li>
		 *     <li>
		 *       function return:
		 *       <ul>
		 *         <li>{string|null} data type detected, or null if unknown (and thus pass it
		 *           on to the other type detection functions.</li>
		 *       </ul>
		 *     </il>
		 *   </ul>
		 *  @type array
		 *  @default []
		 *  
		 *  @example
		 *    // currency type detection plug-in:
		 *    jquery.fn.datatableext.atypes.push(
		 *      function ( sdata ) {
		 *        var svalidchars = "0123456789.-";
		 *        var char;
		 *        
		 *        // check the numeric part
		 *        for ( i=1 ; i<sdata.length ; i++ ) {
		 *          char = sdata.charat(i); 
		 *          if (svalidchars.indexof(char) == -1) {
		 *            return null;
		 *          }
		 *        }
		 *        
		 *        // check prefixed by currency
		 *        if ( sdata.charat(0) == '$' || sdata.charat(0) == '&pound;' ) {
		 *          return 'currency';
		 *        }
		 *        return null;
		 *      }
		 *    );
		 */
		"atypes": [],
	
	
		/**
		 * provide a common method for plug-ins to check the version of datatables being used, 
		 * in order to ensure compatibility.
		 *  @type function
		 *  @param {string} sversion version string to check for, in the format "x.y.z". note 
		 *    that the formats "x" and "x.y" are also acceptable.
		 *  @returns {boolean} true if this version of datatables is greater or equal to the 
		 *    required version, or false if this version of datatales is not suitable
		 *
		 *  @example
		 *    $(document).ready(function() {
		 *      var otable = $('#example').datatable();
		 *      alert( otable.fnversioncheck( '1.9.0' ) );
		 *    } );
		 */
		"fnversioncheck": datatable.fnversioncheck,
	
	
		/**
		 * index for what 'this' index api functions should use
		 *  @type int
		 *  @default 0
		 */
		"iapiindex": 0,
	
	
		/**
		 * pre-processing of filtering data plug-ins - when you assign the stype for a column
		 * (or have it automatically detected for you by datatables or a type detection plug-in), 
		 * you will typically be using this for custom sorting, but it can also be used to provide 
		 * custom filtering by allowing you to pre-processing the data and returning the data in
		 * the format that should be filtered upon. this is done by adding functions this object 
		 * with a parameter name which matches the stype for that target column. this is the
		 * corollary of <i>afnsortdata</i> for filtering data.
		 *   <ul>
	     *     <li>
	     *       function input parameters:
	     *       <ul>
		 *         <li>{*} data from the column cell to be prepared for filtering</li>
	     *       </ul>
	     *     </li>
		 *     <li>
		 *       function return:
		 *       <ul>
		 *         <li>{string|null} formatted string that will be used for the filtering.</li>
		 *       </ul>
		 *     </il>
		 *   </ul>
		 * 
		 * note that as of v1.9, it is typically preferable to use <i>mdata</i> to prepare data for
		 * the different uses that datatables can put the data to. specifically <i>mdata</i> when
		 * used as a function will give you a 'type' (sorting, filtering etc) that you can use to 
		 * prepare the data as required for the different types. as such, this method is deprecated.
		 *  @type object
		 *  @default {}
		 *  @deprecated
		 *
		 *  @example
		 *    $.fn.datatableext.ofnsearch['title-numeric'] = function ( sdata ) {
		 *      return sdata.replace(/\n/g," ").replace( /<.*?>/g, "" );
		 *    }
		 */
		"ofnsearch": {},
	
	
		/**
		 * container for all private functions in datatables so they can be exposed externally
		 *  @type object
		 *  @default {}
		 */
		"oapi": {},
	
	
		/**
		 * storage for the various classes that datatables uses
		 *  @type object
		 *  @default {}
		 */
		"ostdclasses": {},
		
	
		/**
		 * storage for the various classes that datatables uses - jquery ui suitable
		 *  @type object
		 *  @default {}
		 */
		"ojuiclasses": {},
	
	
		/**
		 * pagination plug-in methods - the style and controls of the pagination can significantly 
		 * impact on how the end user interacts with the data in your table, and datatables allows 
		 * the addition of pagination controls by extending this object, which can then be enabled
		 * through the <i>spaginationtype</i> initialisation parameter. each pagination type that
		 * is added is an object (the property name of which is what <i>spaginationtype</i> refers
		 * to) that has two properties, both methods that are used by datatables to update the
		 * control's state.
		 *   <ul>
		 *     <li>
		 *       fninit -  initialisation of the paging controls. called only during initialisation 
		 *         of the table. it is expected that this function will add the required dom elements 
		 *         to the page for the paging controls to work. the element pointer 
		 *         'osettings.aanfeatures.p' array is provided by datatables to contain the paging 
		 *         controls (note that this is a 2d array to allow for multiple instances of each 
		 *         datatables dom element). it is suggested that you add the controls to this element 
		 *         as children
		 *       <ul>
	     *         <li>
	     *           function input parameters:
	     *           <ul>
		 *             <li>{object} datatables settings object: see {@link datatable.models.osettings}.</li>
		 *             <li>{node} container into which the pagination controls must be inserted</li>
		 *             <li>{function} draw callback function - whenever the controls cause a page
		 *               change, this method must be called to redraw the table.</li>
	     *           </ul>
	     *         </li>
		 *         <li>
		 *           function return:
		 *           <ul>
		 *             <li>no return required</li>
		 *           </ul>
		 *         </il>
		 *       </ul>
		 *     </il>
		 *     <li>
		 *       fninit -  this function is called whenever the paging status of the table changes and is
		 *         typically used to update classes and/or text of the paging controls to reflex the new 
		 *         status.
		 *       <ul>
	     *         <li>
	     *           function input parameters:
	     *           <ul>
		 *             <li>{object} datatables settings object: see {@link datatable.models.osettings}.</li>
		 *             <li>{function} draw callback function - in case you need to redraw the table again
		 *               or attach new event listeners</li>
	     *           </ul>
	     *         </li>
		 *         <li>
		 *           function return:
		 *           <ul>
		 *             <li>no return required</li>
		 *           </ul>
		 *         </il>
		 *       </ul>
		 *     </il>
		 *   </ul>
		 *  @type object
		 *  @default {}
		 *
		 *  @example
		 *    $.fn.datatableext.opagination.four_button = {
		 *      "fninit": function ( osettings, npaging, fncallbackdraw ) {
		 *        nfirst = document.createelement( 'span' );
		 *        nprevious = document.createelement( 'span' );
		 *        nnext = document.createelement( 'span' );
		 *        nlast = document.createelement( 'span' );
		 *        
		 *        nfirst.appendchild( document.createtextnode( osettings.olanguage.opaginate.sfirst ) );
		 *        nprevious.appendchild( document.createtextnode( osettings.olanguage.opaginate.sprevious ) );
		 *        nnext.appendchild( document.createtextnode( osettings.olanguage.opaginate.snext ) );
		 *        nlast.appendchild( document.createtextnode( osettings.olanguage.opaginate.slast ) );
		 *        
		 *        nfirst.classname = "paginate_button first";
		 *        nprevious.classname = "paginate_button previous";
		 *        nnext.classname="paginate_button next";
		 *        nlast.classname = "paginate_button last";
		 *        
		 *        npaging.appendchild( nfirst );
		 *        npaging.appendchild( nprevious );
		 *        npaging.appendchild( nnext );
		 *        npaging.appendchild( nlast );
		 *        
		 *        $(nfirst).click( function () {
		 *          osettings.oapi._fnpagechange( osettings, "first" );
		 *          fncallbackdraw( osettings );
		 *        } );
		 *        
		 *        $(nprevious).click( function() {
		 *          osettings.oapi._fnpagechange( osettings, "previous" );
		 *          fncallbackdraw( osettings );
		 *        } );
		 *        
		 *        $(nnext).click( function() {
		 *          osettings.oapi._fnpagechange( osettings, "next" );
		 *          fncallbackdraw( osettings );
		 *        } );
		 *        
		 *        $(nlast).click( function() {
		 *          osettings.oapi._fnpagechange( osettings, "last" );
		 *          fncallbackdraw( osettings );
		 *        } );
		 *        
		 *        $(nfirst).bind( 'selectstart', function () { return false; } );
		 *        $(nprevious).bind( 'selectstart', function () { return false; } );
		 *        $(nnext).bind( 'selectstart', function () { return false; } );
		 *        $(nlast).bind( 'selectstart', function () { return false; } );
		 *      },
		 *      
		 *      "fnupdate": function ( osettings, fncallbackdraw ) {
		 *        if ( !osettings.aanfeatures.p ) {
		 *          return;
		 *        }
		 *        
		 *        // loop over each instance of the pager
		 *        var an = osettings.aanfeatures.p;
		 *        for ( var i=0, ilen=an.length ; i<ilen ; i++ ) {
		 *          var buttons = an[i].getelementsbytagname('span');
		 *          if ( osettings._idisplaystart === 0 ) {
		 *            buttons[0].classname = "paginate_disabled_previous";
		 *            buttons[1].classname = "paginate_disabled_previous";
		 *          }
		 *          else {
		 *            buttons[0].classname = "paginate_enabled_previous";
		 *            buttons[1].classname = "paginate_enabled_previous";
		 *          }
		 *          
		 *          if ( osettings.fndisplayend() == osettings.fnrecordsdisplay() ) {
		 *            buttons[2].classname = "paginate_disabled_next";
		 *            buttons[3].classname = "paginate_disabled_next";
		 *          }
		 *          else {
		 *            buttons[2].classname = "paginate_enabled_next";
		 *            buttons[3].classname = "paginate_enabled_next";
		 *          }
		 *        }
		 *      }
		 *    };
		 */
		"opagination": {},
	
	
		/**
		 * sorting plug-in methods - sorting in datatables is based on the detected type of the
		 * data column (you can add your own type detection functions, or override automatic 
		 * detection using stype). with this specific type given to the column, datatables will 
		 * apply the required sort from the functions in the object. each sort type must provide
		 * two mandatory methods, one each for ascending and descending sorting, and can optionally
		 * provide a pre-formatting method that will help speed up sorting by allowing datatables
		 * to pre-format the sort data only once (rather than every time the actual sort functions
		 * are run). the two sorting functions are typical javascript sort methods:
		 *   <ul>
	     *     <li>
	     *       function input parameters:
	     *       <ul>
		 *         <li>{*} data to compare to the second parameter</li>
		 *         <li>{*} data to compare to the first parameter</li>
	     *       </ul>
	     *     </li>
		 *     <li>
		 *       function return:
		 *       <ul>
		 *         <li>{int} sorting match: <0 if first parameter should be sorted lower than
		 *           the second parameter, ===0 if the two parameters are equal and >0 if
		 *           the first parameter should be sorted height than the second parameter.</li>
		 *       </ul>
		 *     </il>
		 *   </ul>
		 *  @type object
		 *  @default {}
		 *
		 *  @example
		 *    // case-sensitive string sorting, with no pre-formatting method
		 *    $.extend( $.fn.datatableext.osort, {
		 *      "string-case-asc": function(x,y) {
		 *        return ((x < y) ? -1 : ((x > y) ? 1 : 0));
		 *      },
		 *      "string-case-desc": function(x,y) {
		 *        return ((x < y) ? 1 : ((x > y) ? -1 : 0));
		 *      }
		 *    } );
		 *
		 *  @example
		 *    // case-insensitive string sorting, with pre-formatting
		 *    $.extend( $.fn.datatableext.osort, {
		 *      "string-pre": function(x) {
		 *        return x.tolowercase();
		 *      },
		 *      "string-asc": function(x,y) {
		 *        return ((x < y) ? -1 : ((x > y) ? 1 : 0));
		 *      },
		 *      "string-desc": function(x,y) {
		 *        return ((x < y) ? 1 : ((x > y) ? -1 : 0));
		 *      }
		 *    } );
		 */
		"osort": {},
	
	
		/**
		 * version string for plug-ins to check compatibility. allowed format is
		 * a.b.c.d.e where: a:int, b:int, c:int, d:string(dev|beta), e:int. d and
		 * e are optional
		 *  @type string
		 *  @default version number
		 */
		"sversion": datatable.version,
	
	
		/**
		 * how should datatables report an error. can take the value 'alert' or 'throw'
		 *  @type string
		 *  @default alert
		 */
		"serrmode": "alert",
	
	
		/**
		 * store information for datatables to access globally about other instances
		 *  @namespace
		 *  @private
		 */
		"_oexternconfig": {
			/* int:inextunique - next unique number for an instance */
			"inextunique": 0
		}
	};
	
	
	
	
	/**
	 * template object for the way in which datatables holds information about
	 * search information for the global filter and individual column filters.
	 *  @namespace
	 */
	datatable.models.osearch = {
		/**
		 * flag to indicate if the filtering should be case insensitive or not
		 *  @type boolean
		 *  @default true
		 */
		"bcaseinsensitive": true,
	
		/**
		 * applied search term
		 *  @type string
		 *  @default <i>empty string</i>
		 */
		"ssearch": "",
	
		/**
		 * flag to indicate if the search term should be interpreted as a
		 * regular expression (true) or not (false) and therefore and special
		 * regex characters escaped.
		 *  @type boolean
		 *  @default false
		 */
		"bregex": false,
	
		/**
		 * flag to indicate if datatables is to use its smart filtering or not.
		 *  @type boolean
		 *  @default true
		 */
		"bsmart": true
	};
	
	
	
	
	/**
	 * template object for the way in which datatables holds information about
	 * each individual row. this is the object format used for the settings 
	 * aodata array.
	 *  @namespace
	 */
	datatable.models.orow = {
		/**
		 * tr element for the row
		 *  @type node
		 *  @default null
		 */
		"ntr": null,
	
		/**
		 * data object from the original data source for the row. this is either
		 * an array if using the traditional form of datatables, or an object if
		 * using mdata options. the exact type will depend on the passed in
		 * data from the data source, or will be an array if using dom a data 
		 * source.
		 *  @type array|object
		 *  @default []
		 */
		"_adata": [],
	
		/**
		 * sorting data cache - this array is ostensibly the same length as the
		 * number of columns (although each index is generated only as it is 
		 * needed), and holds the data that is used for sorting each column in the
		 * row. we do this cache generation at the start of the sort in order that
		 * the formatting of the sort data need be done only once for each cell
		 * per sort. this array should not be read from or written to by anything
		 * other than the master sorting methods.
		 *  @type array
		 *  @default []
		 *  @private
		 */
		"_asortdata": [],
	
		/**
		 * array of td elements that are cached for hidden rows, so they can be
		 * reinserted into the table if a column is made visible again (or to act
		 * as a store if a column is made hidden). only hidden columns have a 
		 * reference in the array. for non-hidden columns the value is either
		 * undefined or null.
		 *  @type array nodes
		 *  @default []
		 *  @private
		 */
		"_anhidden": [],
	
		/**
		 * cache of the class name that datatables has applied to the row, so we
		 * can quickly look at this variable rather than needing to do a dom check
		 * on classname for the ntr property.
		 *  @type string
		 *  @default <i>empty string</i>
		 *  @private
		 */
		"_srowstripe": ""
	};
	
	
	
	/**
	 * template object for the column information object in datatables. this object
	 * is held in the settings aocolumns array and contains all the information that
	 * datatables needs about each individual column.
	 * 
	 * note that this object is related to {@link datatable.defaults.columns} 
	 * but this one is the internal data store for datatables's cache of columns.
	 * it should not be manipulated outside of datatables. any configuration should
	 * be done through the initialisation options.
	 *  @namespace
	 */
	datatable.models.ocolumn = {
		/**
		 * a list of the columns that sorting should occur on when this column
		 * is sorted. that this property is an array allows multi-column sorting
		 * to be defined for a column (for example first name / last name columns
		 * would benefit from this). the values are integers pointing to the
		 * columns to be sorted on (typically it will be a single integer pointing
		 * at itself, but that doesn't need to be the case).
		 *  @type array
		 */
		"adatasort": null,
	
		/**
		 * define the sorting directions that are applied to the column, in sequence
		 * as the column is repeatedly sorted upon - i.e. the first value is used
		 * as the sorting direction when the column if first sorted (clicked on).
		 * sort it again (click again) and it will move on to the next index.
		 * repeat until loop.
		 *  @type array
		 */
		"assorting": null,
		
		/**
		 * flag to indicate if the column is searchable, and thus should be included
		 * in the filtering or not.
		 *  @type boolean
		 */
		"bsearchable": null,
		
		/**
		 * flag to indicate if the column is sortable or not.
		 *  @type boolean
		 */
		"bsortable": null,
		
		/**
		 * <code>deprecated</code> when using fnrender, you have two options for what 
		 * to do with the data, and this property serves as the switch. firstly, you 
		 * can have the sorting and filtering use the rendered value (true - default), 
		 * or you can have the sorting and filtering us the original value (false).
		 *
		 * please note that this option has now been deprecated and will be removed
		 * in the next version of datatables. please use mrender / mdata rather than
		 * fnrender.
		 *  @type boolean
		 *  @deprecated
		 */
		"buserendered": null,
		
		/**
		 * flag to indicate if the column is currently visible in the table or not
		 *  @type boolean
		 */
		"bvisible": null,
		
		/**
		 * flag to indicate to the type detection method if the automatic type
		 * detection should be used, or if a column type (stype) has been specified
		 *  @type boolean
		 *  @default true
		 *  @private
		 */
		"_bautotype": true,
		
		/**
		 * developer definable function that is called whenever a cell is created (ajax source,
		 * etc) or processed for input (dom source). this can be used as a compliment to mrender
		 * allowing you to modify the dom element (add background colour for example) when the
		 * element is available.
		 *  @type function
		 *  @param {element} ntd the td node that has been created
		 *  @param {*} sdata the data for the cell
		 *  @param {array|object} odata the data for the whole row
		 *  @param {int} irow the row index for the aodata data store
		 *  @default null
		 */
		"fncreatedcell": null,
		
		/**
		 * function to get data from a cell in a column. you should <b>never</b>
		 * access data directly through _adata internally in datatables - always use
		 * the method attached to this property. it allows mdata to function as
		 * required. this function is automatically assigned by the column 
		 * initialisation method
		 *  @type function
		 *  @param {array|object} odata the data array/object for the array 
		 *    (i.e. aodata[]._adata)
		 *  @param {string} sspecific the specific data type you want to get - 
		 *    'display', 'type' 'filter' 'sort'
		 *  @returns {*} the data for the cell from the given row's data
		 *  @default null
		 */
		"fngetdata": null,
		
		/**
		 * <code>deprecated</code> custom display function that will be called for the 
		 * display of each cell in this column.
		 *
		 * please note that this option has now been deprecated and will be removed
		 * in the next version of datatables. please use mrender / mdata rather than
		 * fnrender.
		 *  @type function
		 *  @param {object} o object with the following parameters:
		 *  @param {int}    o.idatarow the row in aodata
		 *  @param {int}    o.idatacolumn the column in question
		 *  @param {array}  o.adata the data for the row in question
		 *  @param {object} o.osettings the settings object for this datatables instance
		 *  @returns {string} the string you which to use in the display
		 *  @default null
		 *  @deprecated
		 */
		"fnrender": null,
		
		/**
		 * function to set data for a cell in the column. you should <b>never</b> 
		 * set the data directly to _adata internally in datatables - always use
		 * this method. it allows mdata to function as required. this function
		 * is automatically assigned by the column initialisation method
		 *  @type function
		 *  @param {array|object} odata the data array/object for the array 
		 *    (i.e. aodata[]._adata)
		 *  @param {*} svalue value to set
		 *  @default null
		 */
		"fnsetdata": null,
		
		/**
		 * property to read the value for the cells in the column from the data 
		 * source array / object. if null, then the default content is used, if a
		 * function is given then the return from the function is used.
		 *  @type function|int|string|null
		 *  @default null
		 */
		"mdata": null,
		
		/**
		 * partner property to mdata which is used (only when defined) to get
		 * the data - i.e. it is basically the same as mdata, but without the
		 * 'set' option, and also the data fed to it is the result from mdata.
		 * this is the rendering method to match the data method of mdata.
		 *  @type function|int|string|null
		 *  @default null
		 */
		"mrender": null,
		
		/**
		 * unique header th/td element for this column - this is what the sorting
		 * listener is attached to (if sorting is enabled.)
		 *  @type node
		 *  @default null
		 */
		"nth": null,
		
		/**
		 * unique footer th/td element for this column (if there is one). not used 
		 * in datatables as such, but can be used for plug-ins to reference the 
		 * footer for each column.
		 *  @type node
		 *  @default null
		 */
		"ntf": null,
		
		/**
		 * the class to apply to all td elements in the table's tbody for the column
		 *  @type string
		 *  @default null
		 */
		"sclass": null,
		
		/**
		 * when datatables calculates the column widths to assign to each column,
		 * it finds the longest string in each column and then constructs a
		 * temporary table and reads the widths from that. the problem with this
		 * is that "mmm" is much wider then "iiii", but the latter is a longer 
		 * string - thus the calculation can go wrong (doing it properly and putting
		 * it into an dom object and measuring that is horribly(!) slow). thus as
		 * a "work around" we provide this option. it will append its value to the
		 * text that is found to be the longest string for the column - i.e. padding.
		 *  @type string
		 */
		"scontentpadding": null,
		
		/**
		 * allows a default value to be given for a column's data, and will be used
		 * whenever a null data source is encountered (this can be because mdata
		 * is set to null, or because the data source itself is null).
		 *  @type string
		 *  @default null
		 */
		"sdefaultcontent": null,
		
		/**
		 * name for the column, allowing reference to the column by name as well as
		 * by index (needs a lookup to work by name).
		 *  @type string
		 */
		"sname": null,
		
		/**
		 * custom sorting data type - defines which of the available plug-ins in
		 * afnsortdata the custom sorting will use - if any is defined.
		 *  @type string
		 *  @default std
		 */
		"ssortdatatype": 'std',
		
		/**
		 * class to be applied to the header element when sorting on this column
		 *  @type string
		 *  @default null
		 */
		"ssortingclass": null,
		
		/**
		 * class to be applied to the header element when sorting on this column -
		 * when jquery ui theming is used.
		 *  @type string
		 *  @default null
		 */
		"ssortingclassjui": null,
		
		/**
		 * title of the column - what is seen in the th element (nth).
		 *  @type string
		 */
		"stitle": null,
		
		/**
		 * column sorting and filtering type
		 *  @type string
		 *  @default null
		 */
		"stype": null,
		
		/**
		 * width of the column
		 *  @type string
		 *  @default null
		 */
		"swidth": null,
		
		/**
		 * width of the column when it was first "encountered"
		 *  @type string
		 *  @default null
		 */
		"swidthorig": null
	};
	
	
	
	/**
	 * initialisation options that can be given to datatables at initialisation 
	 * time.
	 *  @namespace
	 */
	datatable.defaults = {
		/**
		 * an array of data to use for the table, passed in at initialisation which 
		 * will be used in preference to any data which is already in the dom. this is
		 * particularly useful for constructing tables purely in javascript, for
		 * example with a custom ajax call.
		 *  @type array
		 *  @default null
		 *  @dtopt option
		 * 
		 *  @example
		 *    // using a 2d array data source
		 *    $(document).ready( function () {
		 *      $('#example').datatable( {
		 *        "aadata": [
		 *          ['trident', 'internet explorer 4.0', 'win 95+', 4, 'x'],
		 *          ['trident', 'internet explorer 5.0', 'win 95+', 5, 'c'],
		 *        ],
		 *        "aocolumns": [
		 *          { "stitle": "engine" },
		 *          { "stitle": "browser" },
		 *          { "stitle": "platform" },
		 *          { "stitle": "version" },
		 *          { "stitle": "grade" }
		 *        ]
		 *      } );
		 *    } );
		 *    
		 *  @example
		 *    // using an array of objects as a data source (mdata)
		 *    $(document).ready( function () {
		 *      $('#example').datatable( {
		 *        "aadata": [
		 *          {
		 *            "engine":   "trident",
		 *            "browser":  "internet explorer 4.0",
		 *            "platform": "win 95+",
		 *            "version":  4,
		 *            "grade":    "x"
		 *          },
		 *          {
		 *            "engine":   "trident",
		 *            "browser":  "internet explorer 5.0",
		 *            "platform": "win 95+",
		 *            "version":  5,
		 *            "grade":    "c"
		 *          }
		 *        ],
		 *        "aocolumns": [
		 *          { "stitle": "engine",   "mdata": "engine" },
		 *          { "stitle": "browser",  "mdata": "browser" },
		 *          { "stitle": "platform", "mdata": "platform" },
		 *          { "stitle": "version",  "mdata": "version" },
		 *          { "stitle": "grade",    "mdata": "grade" }
		 *        ]
		 *      } );
		 *    } );
		 */
		"aadata": null,
	
	
		/**
		 * if sorting is enabled, then datatables will perform a first pass sort on 
		 * initialisation. you can define which column(s) the sort is performed upon, 
		 * and the sorting direction, with this variable. the aasorting array should 
		 * contain an array for each column to be sorted initially containing the 
		 * column's index and a direction string ('asc' or 'desc').
		 *  @type array
		 *  @default [[0,'asc']]
		 *  @dtopt option
		 * 
		 *  @example
		 *    // sort by 3rd column first, and then 4th column
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "aasorting": [[2,'asc'], [3,'desc']]
		 *      } );
		 *    } );
		 *    
		 *    // no initial sorting
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "aasorting": []
		 *      } );
		 *    } );
		 */
		"aasorting": [[0,'asc']],
	
	
		/**
		 * this parameter is basically identical to the aasorting parameter, but 
		 * cannot be overridden by user interaction with the table. what this means 
		 * is that you could have a column (visible or hidden) which the sorting will 
		 * always be forced on first - any sorting after that (from the user) will 
		 * then be performed as required. this can be useful for grouping rows 
		 * together.
		 *  @type array
		 *  @default null
		 *  @dtopt option
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "aasortingfixed": [[0,'asc']]
		 *      } );
		 *    } )
		 */
		"aasortingfixed": null,
	
	
		/**
		 * this parameter allows you to readily specify the entries in the length drop
		 * down menu that datatables shows when pagination is enabled. it can be 
		 * either a 1d array of options which will be used for both the displayed 
		 * option and the value, or a 2d array which will use the array in the first 
		 * position as the value, and the array in the second position as the 
		 * displayed options (useful for language strings such as 'all').
		 *  @type array
		 *  @default [ 10, 25, 50, 100 ]
		 *  @dtopt option
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "alengthmenu": [[10, 25, 50, -1], [10, 25, 50, "all"]]
		 *      } );
		 *    } );
		 *  
		 *  @example
		 *    // setting the default display length as well as length menu
		 *    // this is likely to be wanted if you remove the '10' option which
		 *    // is the idisplaylength default.
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "idisplaylength": 25,
		 *        "alengthmenu": [[25, 50, 100, -1], [25, 50, 100, "all"]]
		 *      } );
		 *    } );
		 */
		"alengthmenu": [ 10, 25, 50, 100 ],
	
	
		/**
		 * the aocolumns option in the initialisation parameter allows you to define
		 * details about the way individual columns behave. for a full list of
		 * column options that can be set, please see 
		 * {@link datatable.defaults.columns}. note that if you use aocolumns to
		 * define your columns, you must have an entry in the array for every single
		 * column that you have in your table (these can be null if you don't which
		 * to specify any options).
		 *  @member
		 */
		"aocolumns": null,
	
		/**
		 * very similar to aocolumns, aocolumndefs allows you to target a specific 
		 * column, multiple columns, or all columns, using the atargets property of 
		 * each object in the array. this allows great flexibility when creating 
		 * tables, as the aocolumndefs arrays can be of any length, targeting the 
		 * columns you specifically want. aocolumndefs may use any of the column 
		 * options available: {@link datatable.defaults.columns}, but it _must_
		 * have atargets defined in each object in the array. values in the atargets
		 * array may be:
		 *   <ul>
		 *     <li>a string - class name will be matched on the th for the column</li>
		 *     <li>0 or a positive integer - column index counting from the left</li>
		 *     <li>a negative integer - column index counting from the right</li>
		 *     <li>the string "_all" - all columns (i.e. assign a default)</li>
		 *   </ul>
		 *  @member
		 */
		"aocolumndefs": null,
	
	
		/**
		 * basically the same as osearch, this parameter defines the individual column
		 * filtering state at initialisation time. the array must be of the same size 
		 * as the number of columns, and each element be an object with the parameters
		 * "ssearch" and "bescaperegex" (the latter is optional). 'null' is also
		 * accepted and the default will be used.
		 *  @type array
		 *  @default []
		 *  @dtopt option
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "aosearchcols": [
		 *          null,
		 *          { "ssearch": "my filter" },
		 *          null,
		 *          { "ssearch": "^[0-9]", "bescaperegex": false }
		 *        ]
		 *      } );
		 *    } )
		 */
		"aosearchcols": [],
	
	
		/**
		 * an array of css classes that should be applied to displayed rows. this 
		 * array may be of any length, and datatables will apply each class 
		 * sequentially, looping when required.
		 *  @type array
		 *  @default null <i>will take the values determined by the oclasses.sstripe*
		 *    options</i>
		 *  @dtopt option
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "asstripeclasses": [ 'strip1', 'strip2', 'strip3' ]
		 *      } );
		 *    } )
		 */
		"asstripeclasses": null,
	
	
		/**
		 * enable or disable automatic column width calculation. this can be disabled
		 * as an optimisation (it takes some time to calculate the widths) if the
		 * tables widths are passed in using aocolumns.
		 *  @type boolean
		 *  @default true
		 *  @dtopt features
		 * 
		 *  @example
		 *    $(document).ready( function () {
		 *      $('#example').datatable( {
		 *        "bautowidth": false
		 *      } );
		 *    } );
		 */
		"bautowidth": true,
	
	
		/**
		 * deferred rendering can provide datatables with a huge speed boost when you
		 * are using an ajax or js data source for the table. this option, when set to
		 * true, will cause datatables to defer the creation of the table elements for
		 * each row until they are needed for a draw - saving a significant amount of
		 * time.
		 *  @type boolean
		 *  @default false
		 *  @dtopt features
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      var otable = $('#example').datatable( {
		 *        "sajaxsource": "sources/arrays.txt",
		 *        "bdeferrender": true
		 *      } );
		 *    } );
		 */
		"bdeferrender": false,
	
	
		/**
		 * replace a datatable which matches the given selector and replace it with 
		 * one which has the properties of the new initialisation object passed. if no
		 * table matches the selector, then the new datatable will be constructed as
		 * per normal.
		 *  @type boolean
		 *  @default false
		 *  @dtopt options
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "sscrolly": "200px",
		 *        "bpaginate": false
		 *      } );
		 *      
		 *      // some time later....
		 *      $('#example').datatable( {
		 *        "bfilter": false,
		 *        "bdestroy": true
		 *      } );
		 *    } );
		 */
		"bdestroy": false,
	
	
		/**
		 * enable or disable filtering of data. filtering in datatables is "smart" in
		 * that it allows the end user to input multiple words (space separated) and
		 * will match a row containing those words, even if not in the order that was
		 * specified (this allow matching across multiple columns). note that if you
		 * wish to use filtering in datatables this must remain 'true' - to remove the
		 * default filtering input box and retain filtering abilities, please use
		 * {@link datatable.defaults.sdom}.
		 *  @type boolean
		 *  @default true
		 *  @dtopt features
		 * 
		 *  @example
		 *    $(document).ready( function () {
		 *      $('#example').datatable( {
		 *        "bfilter": false
		 *      } );
		 *    } );
		 */
		"bfilter": true,
	
	
		/**
		 * enable or disable the table information display. this shows information 
		 * about the data that is currently visible on the page, including information
		 * about filtered data if that action is being performed.
		 *  @type boolean
		 *  @default true
		 *  @dtopt features
		 * 
		 *  @example
		 *    $(document).ready( function () {
		 *      $('#example').datatable( {
		 *        "binfo": false
		 *      } );
		 *    } );
		 */
		"binfo": true,
	
	
		/**
		 * enable jquery ui themeroller support (required as themeroller requires some
		 * slightly different and additional mark-up from what datatables has
		 * traditionally used).
		 *  @type boolean
		 *  @default false
		 *  @dtopt features
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "bjqueryui": true
		 *      } );
		 *    } );
		 */
		"bjqueryui": false,
	
	
		/**
		 * allows the end user to select the size of a formatted page from a select
		 * menu (sizes are 10, 25, 50 and 100). requires pagination (bpaginate).
		 *  @type boolean
		 *  @default true
		 *  @dtopt features
		 * 
		 *  @example
		 *    $(document).ready( function () {
		 *      $('#example').datatable( {
		 *        "blengthchange": false
		 *      } );
		 *    } );
		 */
		"blengthchange": true,
	
	
		/**
		 * enable or disable pagination.
		 *  @type boolean
		 *  @default true
		 *  @dtopt features
		 * 
		 *  @example
		 *    $(document).ready( function () {
		 *      $('#example').datatable( {
		 *        "bpaginate": false
		 *      } );
		 *    } );
		 */
		"bpaginate": true,
	
	
		/**
		 * enable or disable the display of a 'processing' indicator when the table is
		 * being processed (e.g. a sort). this is particularly useful for tables with
		 * large amounts of data where it can take a noticeable amount of time to sort
		 * the entries.
		 *  @type boolean
		 *  @default false
		 *  @dtopt features
		 * 
		 *  @example
		 *    $(document).ready( function () {
		 *      $('#example').datatable( {
		 *        "bprocessing": true
		 *      } );
		 *    } );
		 */
		"bprocessing": false,
	
	
		/**
		 * retrieve the datatables object for the given selector. note that if the
		 * table has already been initialised, this parameter will cause datatables
		 * to simply return the object that has already been set up - it will not take
		 * account of any changes you might have made to the initialisation object
		 * passed to datatables (setting this parameter to true is an acknowledgement
		 * that you understand this). bdestroy can be used to reinitialise a table if
		 * you need.
		 *  @type boolean
		 *  @default false
		 *  @dtopt options
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      inittable();
		 *      tableactions();
		 *    } );
		 *    
		 *    function inittable ()
		 *    {
		 *      return $('#example').datatable( {
		 *        "sscrolly": "200px",
		 *        "bpaginate": false,
		 *        "bretrieve": true
		 *      } );
		 *    }
		 *    
		 *    function tableactions ()
		 *    {
		 *      var otable = inittable();
		 *      // perform api operations with otable 
		 *    }
		 */
		"bretrieve": false,
	
	
		/**
		 * indicate if datatables should be allowed to set the padding / margin
		 * etc for the scrolling header elements or not. typically you will want
		 * this.
		 *  @type boolean
		 *  @default true
		 *  @dtopt options
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "bscrollautocss": false,
		 *        "sscrolly": "200px"
		 *      } );
		 *    } );
		 */
		"bscrollautocss": true,
	
	
		/**
		 * when vertical (y) scrolling is enabled, datatables will force the height of
		 * the table's viewport to the given height at all times (useful for layout).
		 * however, this can look odd when filtering data down to a small data set,
		 * and the footer is left "floating" further down. this parameter (when
		 * enabled) will cause datatables to collapse the table's viewport down when
		 * the result set will fit within the given y height.
		 *  @type boolean
		 *  @default false
		 *  @dtopt options
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "sscrolly": "200",
		 *        "bscrollcollapse": true
		 *      } );
		 *    } );
		 */
		"bscrollcollapse": false,
	
	
		/**
		 * enable infinite scrolling for datatables (to be used in combination with
		 * sscrolly). infinite scrolling means that datatables will continually load
		 * data as a user scrolls through a table, which is very useful for large
		 * dataset. this cannot be used with pagination, which is automatically
		 * disabled. note - the scroller extra for datatables is recommended in
		 * in preference to this option.
		 *  @type boolean
		 *  @default false
		 *  @dtopt features
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "bscrollinfinite": true,
		 *        "bscrollcollapse": true,
		 *        "sscrolly": "200px"
		 *      } );
		 *    } );
		 */
		"bscrollinfinite": false,
	
	
		/**
		 * configure datatables to use server-side processing. note that the
		 * sajaxsource parameter must also be given in order to give datatables a
		 * source to obtain the required data for each draw.
		 *  @type boolean
		 *  @default false
		 *  @dtopt features
		 *  @dtopt server-side
		 * 
		 *  @example
		 *    $(document).ready( function () {
		 *      $('#example').datatable( {
		 *        "bserverside": true,
		 *        "sajaxsource": "xhr.php"
		 *      } );
		 *    } );
		 */
		"bserverside": false,
	
	
		/**
		 * enable or disable sorting of columns. sorting of individual columns can be
		 * disabled by the "bsortable" option for each column.
		 *  @type boolean
		 *  @default true
		 *  @dtopt features
		 * 
		 *  @example
		 *    $(document).ready( function () {
		 *      $('#example').datatable( {
		 *        "bsort": false
		 *      } );
		 *    } );
		 */
		"bsort": true,
	
	
		/**
		 * allows control over whether datatables should use the top (true) unique
		 * cell that is found for a single column, or the bottom (false - default).
		 * this is useful when using complex headers.
		 *  @type boolean
		 *  @default false
		 *  @dtopt options
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "bsortcellstop": true
		 *      } );
		 *    } );
		 */
		"bsortcellstop": false,
	
	
		/**
		 * enable or disable the addition of the classes 'sorting_1', 'sorting_2' and
		 * 'sorting_3' to the columns which are currently being sorted on. this is
		 * presented as a feature switch as it can increase processing time (while
		 * classes are removed and added) so for large data sets you might want to
		 * turn this off.
		 *  @type boolean
		 *  @default true
		 *  @dtopt features
		 * 
		 *  @example
		 *    $(document).ready( function () {
		 *      $('#example').datatable( {
		 *        "bsortclasses": false
		 *      } );
		 *    } );
		 */
		"bsortclasses": true,
	
	
		/**
		 * enable or disable state saving. when enabled a cookie will be used to save
		 * table display information such as pagination information, display length,
		 * filtering and sorting. as such when the end user reloads the page the
		 * display display will match what thy had previously set up.
		 *  @type boolean
		 *  @default false
		 *  @dtopt features
		 * 
		 *  @example
		 *    $(document).ready( function () {
		 *      $('#example').datatable( {
		 *        "bstatesave": true
		 *      } );
		 *    } );
		 */
		"bstatesave": false,
	
	
		/**
		 * customise the cookie and / or the parameters being stored when using
		 * datatables with state saving enabled. this function is called whenever
		 * the cookie is modified, and it expects a fully formed cookie string to be
		 * returned. note that the data object passed in is a javascript object which
		 * must be converted to a string (json.stringify for example).
		 *  @type function
		 *  @param {string} sname name of the cookie defined by datatables
		 *  @param {object} odata data to be stored in the cookie
		 *  @param {string} sexpires cookie expires string
		 *  @param {string} spath path of the cookie to set
		 *  @returns {string} cookie formatted string (which should be encoded by
		 *    using encodeuricomponent())
		 *  @dtopt callbacks
		 * 
		 *  @example
		 *    $(document).ready( function () {
		 *      $('#example').datatable( {
		 *        "fncookiecallback": function (sname, odata, sexpires, spath) {
		 *          // customise odata or sname or whatever else here
		 *          return sname + "="+json.stringify(odata)+"; expires=" + sexpires +"; path=" + spath;
		 *        }
		 *      } );
		 *    } );
		 */
		"fncookiecallback": null,
	
	
		/**
		 * this function is called when a tr element is created (and all td child
		 * elements have been inserted), or registered if using a dom source, allowing
		 * manipulation of the tr element (adding classes etc).
		 *  @type function
		 *  @param {node} nrow "tr" element for the current row
		 *  @param {array} adata raw data array for this row
		 *  @param {int} idataindex the index of this row in aodata
		 *  @dtopt callbacks
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "fncreatedrow": function( nrow, adata, idataindex ) {
		 *          // bold the grade for all 'a' grade browsers
		 *          if ( adata[4] == "a" )
		 *          {
		 *            $('td:eq(4)', nrow).html( '<b>a</b>' );
		 *          }
		 *        }
		 *      } );
		 *    } );
		 */
		"fncreatedrow": null,
	
	
		/**
		 * this function is called on every 'draw' event, and allows you to
		 * dynamically modify any aspect you want about the created dom.
		 *  @type function
		 *  @param {object} osettings datatables settings object
		 *  @dtopt callbacks
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "fndrawcallback": function( osettings ) {
		 *          alert( 'datatables has redrawn the table' );
		 *        }
		 *      } );
		 *    } );
		 */
		"fndrawcallback": null,
	
	
		/**
		 * identical to fnheadercallback() but for the table footer this function
		 * allows you to modify the table footer on every 'draw' even.
		 *  @type function
		 *  @param {node} nfoot "tr" element for the footer
		 *  @param {array} adata full table data (as derived from the original html)
		 *  @param {int} istart index for the current display starting point in the 
		 *    display array
		 *  @param {int} iend index for the current display ending point in the 
		 *    display array
		 *  @param {array int} aidisplay index array to translate the visual position
		 *    to the full data array
		 *  @dtopt callbacks
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "fnfootercallback": function( nfoot, adata, istart, iend, aidisplay ) {
		 *          nfoot.getelementsbytagname('th')[0].innerhtml = "starting index is "+istart;
		 *        }
		 *      } );
		 *    } )
		 */
		"fnfootercallback": null,
	
	
		/**
		 * when rendering large numbers in the information element for the table
		 * (i.e. "showing 1 to 10 of 57 entries") datatables will render large numbers
		 * to have a comma separator for the 'thousands' units (e.g. 1 million is
		 * rendered as "1,000,000") to help readability for the end user. this
		 * function will override the default method datatables uses.
		 *  @type function
		 *  @member
		 *  @param {int} iin number to be formatted
		 *  @returns {string} formatted string for datatables to show the number
		 *  @dtopt callbacks
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "fnformatnumber": function ( iin ) {
		 *          if ( iin &lt; 1000 ) {
		 *            return iin;
		 *          } else {
		 *            var 
		 *              s=(iin+""), 
		 *              a=s.split(""), out="", 
		 *              ilen=s.length;
		 *            
		 *            for ( var i=0 ; i&lt;ilen ; i++ ) {
		 *              if ( i%3 === 0 &amp;&amp; i !== 0 ) {
		 *                out = "'"+out;
		 *              }
		 *              out = a[ilen-i-1]+out;
		 *            }
		 *          }
		 *          return out;
		 *        };
		 *      } );
		 *    } );
		 */
		"fnformatnumber": function ( iin ) {
			if ( iin < 1000 )
			{
				// a small optimisation for what is likely to be the majority of use cases
				return iin;
			}
	
			var s=(iin+""), a=s.split(""), out="", ilen=s.length;
			
			for ( var i=0 ; i<ilen ; i++ )
			{
				if ( i%3 === 0 && i !== 0 )
				{
					out = this.olanguage.sinfothousands+out;
				}
				out = a[ilen-i-1]+out;
			}
			return out;
		},
	
	
		/**
		 * this function is called on every 'draw' event, and allows you to
		 * dynamically modify the header row. this can be used to calculate and
		 * display useful information about the table.
		 *  @type function
		 *  @param {node} nhead "tr" element for the header
		 *  @param {array} adata full table data (as derived from the original html)
		 *  @param {int} istart index for the current display starting point in the
		 *    display array
		 *  @param {int} iend index for the current display ending point in the
		 *    display array
		 *  @param {array int} aidisplay index array to translate the visual position
		 *    to the full data array
		 *  @dtopt callbacks
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "fnheadercallback": function( nhead, adata, istart, iend, aidisplay ) {
		 *          nhead.getelementsbytagname('th')[0].innerhtml = "displaying "+(iend-istart)+" records";
		 *        }
		 *      } );
		 *    } )
		 */
		"fnheadercallback": null,
	
	
		/**
		 * the information element can be used to convey information about the current
		 * state of the table. although the internationalisation options presented by
		 * datatables are quite capable of dealing with most customisations, there may
		 * be times where you wish to customise the string further. this callback
		 * allows you to do exactly that.
		 *  @type function
		 *  @param {object} osettings datatables settings object
		 *  @param {int} istart starting position in data for the draw
		 *  @param {int} iend end position in data for the draw
		 *  @param {int} imax total number of rows in the table (regardless of
		 *    filtering)
		 *  @param {int} itotal total number of rows in the data set, after filtering
		 *  @param {string} spre the string that datatables has formatted using it's
		 *    own rules
		 *  @returns {string} the string to be displayed in the information element.
		 *  @dtopt callbacks
		 * 
		 *  @example
		 *    $('#example').datatable( {
		 *      "fninfocallback": function( osettings, istart, iend, imax, itotal, spre ) {
		 *        return istart +" to "+ iend;
		 *      }
		 *    } );
		 */
		"fninfocallback": null,
	
	
		/**
		 * called when the table has been initialised. normally datatables will
		 * initialise sequentially and there will be no need for this function,
		 * however, this does not hold true when using external language information
		 * since that is obtained using an async xhr call.
		 *  @type function
		 *  @param {object} osettings datatables settings object
		 *  @param {object} json the json object request from the server - only
		 *    present if client-side ajax sourced data is used
		 *  @dtopt callbacks
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "fninitcomplete": function(osettings, json) {
		 *          alert( 'datatables has finished its initialisation.' );
		 *        }
		 *      } );
		 *    } )
		 */
		"fninitcomplete": null,
	
	
		/**
		 * called at the very start of each table draw and can be used to cancel the
		 * draw by returning false, any other return (including undefined) results in
		 * the full draw occurring).
		 *  @type function
		 *  @param {object} osettings datatables settings object
		 *  @returns {boolean} false will cancel the draw, anything else (including no
		 *    return) will allow it to complete.
		 *  @dtopt callbacks
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "fnpredrawcallback": function( osettings ) {
		 *          if ( $('#test').val() == 1 ) {
		 *            return false;
		 *          }
		 *        }
		 *      } );
		 *    } );
		 */
		"fnpredrawcallback": null,
	
	
		/**
		 * this function allows you to 'post process' each row after it have been
		 * generated for each table draw, but before it is rendered on screen. this
		 * function might be used for setting the row class name etc.
		 *  @type function
		 *  @param {node} nrow "tr" element for the current row
		 *  @param {array} adata raw data array for this row
		 *  @param {int} idisplayindex the display index for the current table draw
		 *  @param {int} idisplayindexfull the index of the data in the full list of
		 *    rows (after filtering)
		 *  @dtopt callbacks
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "fnrowcallback": function( nrow, adata, idisplayindex, idisplayindexfull ) {
		 *          // bold the grade for all 'a' grade browsers
		 *          if ( adata[4] == "a" )
		 *          {
		 *            $('td:eq(4)', nrow).html( '<b>a</b>' );
		 *          }
		 *        }
		 *      } );
		 *    } );
		 */
		"fnrowcallback": null,
	
	
		/**
		 * this parameter allows you to override the default function which obtains
		 * the data from the server ($.getjson) so something more suitable for your
		 * application. for example you could use post data, or pull information from
		 * a gears or air database.
		 *  @type function
		 *  @member
		 *  @param {string} ssource http source to obtain the data from (sajaxsource)
		 *  @param {array} aodata a key/value pair object containing the data to send
		 *    to the server
		 *  @param {function} fncallback to be called on completion of the data get
		 *    process that will draw the data on the page.
		 *  @param {object} osettings datatables settings object
		 *  @dtopt callbacks
		 *  @dtopt server-side
		 * 
		 *  @example
		 *    // post data to server
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "bprocessing": true,
		 *        "bserverside": true,
		 *        "sajaxsource": "xhr.php",
		 *        "fnserverdata": function ( ssource, aodata, fncallback, osettings ) {
		 *          osettings.jqxhr = $.ajax( {
		 *            "datatype": 'json', 
		 *            "type": "post", 
		 *            "url": ssource, 
		 *            "data": aodata, 
		 *            "success": fncallback
		 *          } );
		 *        }
		 *      } );
		 *    } );
		 */
		"fnserverdata": function ( surl, aodata, fncallback, osettings ) {
			osettings.jqxhr = $.ajax( {
				"url":  surl,
				"data": aodata,
				"success": function (json) {
					if ( json.serror ) {
						osettings.oapi._fnlog( osettings, 0, json.serror );
					}
					
					$(osettings.oinstance).trigger('xhr', [osettings, json]);
					fncallback( json );
				},
				"datatype": "json",
				"cache": false,
				"type": osettings.sservermethod,
				"error": function (xhr, error, thrown) {
					if ( error == "parsererror" ) {
						osettings.oapi._fnlog( osettings, 0, "datatables warning: json data from "+
							"server could not be parsed. this is caused by a json formatting error." );
					}
				}
			} );
		},
	
	
		/**
		 * it is often useful to send extra data to the server when making an ajax
		 * request - for example custom filtering information, and this callback
		 * function makes it trivial to send extra information to the server. the
		 * passed in parameter is the data set that has been constructed by
		 * datatables, and you can add to this or modify it as you require.
		 *  @type function
		 *  @param {array} aodata data array (array of objects which are name/value
		 *    pairs) that has been constructed by datatables and will be sent to the
		 *    server. in the case of ajax sourced data with server-side processing
		 *    this will be an empty array, for server-side processing there will be a
		 *    significant number of parameters!
		 *  @returns {undefined} ensure that you modify the aodata array passed in,
		 *    as this is passed by reference.
		 *  @dtopt callbacks
		 *  @dtopt server-side
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "bprocessing": true,
		 *        "bserverside": true,
		 *        "sajaxsource": "scripts/server_processing.php",
		 *        "fnserverparams": function ( aodata ) {
		 *          aodata.push( { "name": "more_data", "value": "my_value" } );
		 *        }
		 *      } );
		 *    } );
		 */
		"fnserverparams": null,
	
	
		/**
		 * load the table state. with this function you can define from where, and how, the
		 * state of a table is loaded. by default datatables will load from its state saving
		 * cookie, but you might wish to use local storage (html5) or a server-side database.
		 *  @type function
		 *  @member
		 *  @param {object} osettings datatables settings object
		 *  @return {object} the datatables state object to be loaded
		 *  @dtopt callbacks
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "bstatesave": true,
		 *        "fnstateload": function (osettings) {
		 *          var o;
		 *          
		 *          // send an ajax request to the server to get the data. note that
		 *          // this is a synchronous request.
		 *          $.ajax( {
		 *            "url": "/state_load",
		 *            "async": false,
		 *            "datatype": "json",
		 *            "success": function (json) {
		 *              o = json;
		 *            }
		 *          } );
		 *          
		 *          return o;
		 *        }
		 *      } );
		 *    } );
		 */
		"fnstateload": function ( osettings ) {
			var sdata = this.oapi._fnreadcookie( osettings.scookieprefix+osettings.sinstance );
			var odata;
	
			try {
				odata = (typeof $.parsejson === 'function') ? 
					$.parsejson(sdata) : eval( '('+sdata+')' );
			} catch (e) {
				odata = null;
			}
	
			return odata;
		},
	
	
		/**
		 * callback which allows modification of the saved state prior to loading that state.
		 * this callback is called when the table is loading state from the stored data, but
		 * prior to the settings object being modified by the saved state. note that for 
		 * plug-in authors, you should use the 'stateloadparams' event to load parameters for 
		 * a plug-in.
		 *  @type function
		 *  @param {object} osettings datatables settings object
		 *  @param {object} odata the state object that is to be loaded
		 *  @dtopt callbacks
		 * 
		 *  @example
		 *    // remove a saved filter, so filtering is never loaded
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "bstatesave": true,
		 *        "fnstateloadparams": function (osettings, odata) {
		 *          odata.osearch.ssearch = "";
		 *        }
		 *      } );
		 *    } );
		 * 
		 *  @example
		 *    // disallow state loading by returning false
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "bstatesave": true,
		 *        "fnstateloadparams": function (osettings, odata) {
		 *          return false;
		 *        }
		 *      } );
		 *    } );
		 */
		"fnstateloadparams": null,
	
	
		/**
		 * callback that is called when the state has been loaded from the state saving method
		 * and the datatables settings object has been modified as a result of the loaded state.
		 *  @type function
		 *  @param {object} osettings datatables settings object
		 *  @param {object} odata the state object that was loaded
		 *  @dtopt callbacks
		 * 
		 *  @example
		 *    // show an alert with the filtering value that was saved
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "bstatesave": true,
		 *        "fnstateloaded": function (osettings, odata) {
		 *          alert( 'saved filter was: '+odata.osearch.ssearch );
		 *        }
		 *      } );
		 *    } );
		 */
		"fnstateloaded": null,
	
	
		/**
		 * save the table state. this function allows you to define where and how the state
		 * information for the table is stored - by default it will use a cookie, but you
		 * might want to use local storage (html5) or a server-side database.
		 *  @type function
		 *  @member
		 *  @param {object} osettings datatables settings object
		 *  @param {object} odata the state object to be saved
		 *  @dtopt callbacks
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "bstatesave": true,
		 *        "fnstatesave": function (osettings, odata) {
		 *          // send an ajax request to the server with the state object
		 *          $.ajax( {
		 *            "url": "/state_save",
		 *            "data": odata,
		 *            "datatype": "json",
		 *            "method": "post"
		 *            "success": function () {}
		 *          } );
		 *        }
		 *      } );
		 *    } );
		 */
		"fnstatesave": function ( osettings, odata ) {
			this.oapi._fncreatecookie( 
				osettings.scookieprefix+osettings.sinstance, 
				this.oapi._fnjsonstring(odata), 
				osettings.icookieduration, 
				osettings.scookieprefix, 
				osettings.fncookiecallback
			);
		},
	
	
		/**
		 * callback which allows modification of the state to be saved. called when the table 
		 * has changed state a new state save is required. this method allows modification of
		 * the state saving object prior to actually doing the save, including addition or 
		 * other state properties or modification. note that for plug-in authors, you should 
		 * use the 'statesaveparams' event to save parameters for a plug-in.
		 *  @type function
		 *  @param {object} osettings datatables settings object
		 *  @param {object} odata the state object to be saved
		 *  @dtopt callbacks
		 * 
		 *  @example
		 *    // remove a saved filter, so filtering is never saved
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "bstatesave": true,
		 *        "fnstatesaveparams": function (osettings, odata) {
		 *          odata.osearch.ssearch = "";
		 *        }
		 *      } );
		 *    } );
		 */
		"fnstatesaveparams": null,
	
	
		/**
		 * duration of the cookie which is used for storing session information. this
		 * value is given in seconds.
		 *  @type int
		 *  @default 7200 <i>(2 hours)</i>
		 *  @dtopt options
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "icookieduration": 60*60*24; // 1 day
		 *      } );
		 *    } )
		 */
		"icookieduration": 7200,
	
	
		/**
		 * when enabled datatables will not make a request to the server for the first
		 * page draw - rather it will use the data already on the page (no sorting etc
		 * will be applied to it), thus saving on an xhr at load time. ideferloading
		 * is used to indicate that deferred loading is required, but it is also used
		 * to tell datatables how many records there are in the full table (allowing
		 * the information element and pagination to be displayed correctly). in the case
		 * where a filtering is applied to the table on initial load, this can be
		 * indicated by giving the parameter as an array, where the first element is
		 * the number of records available after filtering and the second element is the
		 * number of records without filtering (allowing the table information element
		 * to be shown correctly).
		 *  @type int | array
		 *  @default null
		 *  @dtopt options
		 * 
		 *  @example
		 *    // 57 records available in the table, no filtering applied
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "bserverside": true,
		 *        "sajaxsource": "scripts/server_processing.php",
		 *        "ideferloading": 57
		 *      } );
		 *    } );
		 * 
		 *  @example
		 *    // 57 records after filtering, 100 without filtering (an initial filter applied)
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "bserverside": true,
		 *        "sajaxsource": "scripts/server_processing.php",
		 *        "ideferloading": [ 57, 100 ],
		 *        "osearch": {
		 *          "ssearch": "my_filter"
		 *        }
		 *      } );
		 *    } );
		 */
		"ideferloading": null,
	
	
		/**
		 * number of rows to display on a single page when using pagination. if
		 * feature enabled (blengthchange) then the end user will be able to override
		 * this to a custom setting using a pop-up menu.
		 *  @type int
		 *  @default 10
		 *  @dtopt options
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "idisplaylength": 50
		 *      } );
		 *    } )
		 */
		"idisplaylength": 10,
	
	
		/**
		 * define the starting point for data display when using datatables with
		 * pagination. note that this parameter is the number of records, rather than
		 * the page number, so if you have 10 records per page and want to start on
		 * the third page, it should be "20".
		 *  @type int
		 *  @default 0
		 *  @dtopt options
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "idisplaystart": 20
		 *      } );
		 *    } )
		 */
		"idisplaystart": 0,
	
	
		/**
		 * the scroll gap is the amount of scrolling that is left to go before
		 * datatables will load the next 'page' of data automatically. you typically
		 * want a gap which is big enough that the scrolling will be smooth for the
		 * user, while not so large that it will load more data than need.
		 *  @type int
		 *  @default 100
		 *  @dtopt options
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "bscrollinfinite": true,
		 *        "bscrollcollapse": true,
		 *        "sscrolly": "200px",
		 *        "iscrollloadgap": 50
		 *      } );
		 *    } );
		 */
		"iscrollloadgap": 100,
	
	
		/**
		 * by default datatables allows keyboard navigation of the table (sorting, paging,
		 * and filtering) by adding a tabindex attribute to the required elements. this
		 * allows you to tab through the controls and press the enter key to activate them.
		 * the tabindex is default 0, meaning that the tab follows the flow of the document.
		 * you can overrule this using this parameter if you wish. use a value of -1 to
		 * disable built-in keyboard navigation.
		 *  @type int
		 *  @default 0
		 *  @dtopt options
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "itabindex": 1
		 *      } );
		 *    } );
		 */
		"itabindex": 0,
	
	
		/**
		 * all strings that datatables uses in the user interface that it creates
		 * are defined in this object, allowing you to modified them individually or
		 * completely replace them all as required.
		 *  @namespace
		 */
		"olanguage": {
			/**
			 * strings that are used for wai-aria labels and controls only (these are not
			 * actually visible on the page, but will be read by screenreaders, and thus
			 * must be internationalised as well).
			 *  @namespace
			 */
			"oaria": {
				/**
				 * aria label that is added to the table headers when the column may be
				 * sorted ascending by activing the column (click or return when focused).
				 * note that the column header is prefixed to this string.
				 *  @type string
				 *  @default : activate to sort column ascending
				 *  @dtopt language
				 * 
				 *  @example
				 *    $(document).ready( function() {
				 *      $('#example').datatable( {
				 *        "olanguage": {
				 *          "oaria": {
				 *            "ssortascending": " - click/return to sort ascending"
				 *          }
				 *        }
				 *      } );
				 *    } );
				 */
				"ssortascending": ": activate to sort column ascending",
	
				/**
				 * aria label that is added to the table headers when the column may be
				 * sorted descending by activing the column (click or return when focused).
				 * note that the column header is prefixed to this string.
				 *  @type string
				 *  @default : activate to sort column ascending
				 *  @dtopt language
				 * 
				 *  @example
				 *    $(document).ready( function() {
				 *      $('#example').datatable( {
				 *        "olanguage": {
				 *          "oaria": {
				 *            "ssortdescending": " - click/return to sort descending"
				 *          }
				 *        }
				 *      } );
				 *    } );
				 */
				"ssortdescending": ": activate to sort column descending"
			},
	
			/**
			 * pagination string used by datatables for the two built-in pagination
			 * control types ("two_button" and "full_numbers")
			 *  @namespace
			 */
			"opaginate": {
				/**
				 * text to use when using the 'full_numbers' type of pagination for the
				 * button to take the user to the first page.
				 *  @type string
				 *  @default first
				 *  @dtopt language
				 * 
				 *  @example
				 *    $(document).ready( function() {
				 *      $('#example').datatable( {
				 *        "olanguage": {
				 *          "opaginate": {
				 *            "sfirst": "first page"
				 *          }
				 *        }
				 *      } );
				 *    } );
				 */
				"sfirst": "开始（first）",
			
			
				/**
				 * text to use when using the 'full_numbers' type of pagination for the
				 * button to take the user to the last page.
				 *  @type string
				 *  @default last
				 *  @dtopt language
				 * 
				 *  @example
				 *    $(document).ready( function() {
				 *      $('#example').datatable( {
				 *        "olanguage": {
				 *          "opaginate": {
				 *            "slast": "last page"
				 *          }
				 *        }
				 *      } );
				 *    } );
				 */
				"slast": "最后（last）",
			
			
				/**
				 * text to use for the 'next' pagination button (to take the user to the 
				 * next page).
				 *  @type string
				 *  @default next
				 *  @dtopt language
				 * 
				 *  @example
				 *    $(document).ready( function() {
				 *      $('#example').datatable( {
				 *        "olanguage": {
				 *          "opaginate": {
				 *            "snext": "next page"
				 *          }
				 *        }
				 *      } );
				 *    } );
				 */
				"snext": "下一页(next)",
			
			
				/**
				 * text to use for the 'previous' pagination button (to take the user to  
				 * the previous page).
				 *  @type string
				 *  @default previous
				 *  @dtopt language
				 * 
				 *  @example
				 *    $(document).ready( function() {
				 *      $('#example').datatable( {
				 *        "olanguage": {
				 *          "opaginate": {
				 *            "sprevious": "previous page"
				 *          }
				 *        }
				 *      } );
				 *    } );
				 */
				"sprevious": "上一页(previous)"
			},
		
			/**
			 * this string is shown in preference to szerorecords when the table is
			 * empty of data (regardless of filtering). note that this is an optional
			 * parameter - if it is not given, the value of szerorecords will be used
			 * instead (either the default or given value).
			 *  @type string
			 *  @default no data available in table
			 *  @dtopt language
			 * 
			 *  @example
			 *    $(document).ready( function() {
			 *      $('#example').datatable( {
			 *        "olanguage": {
			 *          "semptytable": "no data available in table"
			 *        }
			 *      } );
			 *    } );
			 */
			"semptytable": "no data available in table",
		
		
			/**
			 * this string gives information to the end user about the information that 
			 * is current on display on the page. the _start_, _end_ and _total_ 
			 * variables are all dynamically replaced as the table display updates, and 
			 * can be freely moved or removed as the language requirements change.
			 *  @type string
			 *  @default showing _start_ to _end_ of _total_ entries
			 *  @dtopt language
			 * 
			 *  @example
			 *    $(document).ready( function() {
			 *      $('#example').datatable( {
			 *        "olanguage": {
			 *          "sinfo": "got a total of _total_ entries to show (_start_ to _end_)"
			 *        }
			 *      } );
			 *    } );
			 */
			"sinfo": "显示（showing） _start_ to _end_ of _total_ 项（entries）",
		
		
			/**
			 * display information string for when the table is empty. typically the 
			 * format of this string should match sinfo.
			 *  @type string
			 *  @default showing 0 to 0 of 0 entries
			 *  @dtopt language
			 * 
			 *  @example
			 *    $(document).ready( function() {
			 *      $('#example').datatable( {
			 *        "olanguage": {
			 *          "sinfoempty": "no entries to show"
			 *        }
			 *      } );
			 *    } );
			 */
			"sinfoempty": "显示（showing） 0 to 0 of 项（entries）",
		
		
			/**
			 * when a user filters the information in a table, this string is appended 
			 * to the information (sinfo) to give an idea of how strong the filtering 
			 * is. the variable _max_ is dynamically updated.
			 *  @type string
			 *  @default (filtered from _max_ total entries)
			 *  @dtopt language
			 * 
			 *  @example
			 *    $(document).ready( function() {
			 *      $('#example').datatable( {
			 *        "olanguage": {
			 *          "sinfofiltered": " - filtering from _max_ records"
			 *        }
			 *      } );
			 *    } );
			 */
			"sinfofiltered": "(filtered from _max_ total entries)",
		
		
			/**
			 * if can be useful to append extra information to the info string at times,
			 * and this variable does exactly that. this information will be appended to
			 * the sinfo (sinfoempty and sinfofiltered in whatever combination they are
			 * being used) at all times.
			 *  @type string
			 *  @default <i>empty string</i>
			 *  @dtopt language
			 * 
			 *  @example
			 *    $(document).ready( function() {
			 *      $('#example').datatable( {
			 *        "olanguage": {
			 *          "sinfopostfix": "all records shown are derived from real information."
			 *        }
			 *      } );
			 *    } );
			 */
			"sinfopostfix": "",
		
		
			/**
			 * datatables has a build in number formatter (fnformatnumber) which is used
			 * to format large numbers that are used in the table information. by
			 * default a comma is used, but this can be trivially changed to any
			 * character you wish with this parameter.
			 *  @type string
			 *  @default ,
			 *  @dtopt language
			 * 
			 *  @example
			 *    $(document).ready( function() {
			 *      $('#example').datatable( {
			 *        "olanguage": {
			 *          "sinfothousands": "'"
			 *        }
			 *      } );
			 *    } );
			 */
			"sinfothousands": ",",
		
		
			/**
			 * detail the action that will be taken when the drop down menu for the
			 * pagination length option is changed. the '_menu_' variable is replaced
			 * with a default select list of 10, 25, 50 and 100, and can be replaced
			 * with a custom select box if required.
			 *  @type string
			 *  @default show _menu_ entries
			 *  @dtopt language
			 * 
			 *  @example
			 *    // language change only
			 *    $(document).ready( function() {
			 *      $('#example').datatable( {
			 *        "olanguage": {
			 *          "slengthmenu": "display _menu_ records"
			 *        }
			 *      } );
			 *    } );
			 *    
			 *  @example
			 *    // language and options change
			 *    $(document).ready( function() {
			 *      $('#example').datatable( {
			 *        "olanguage": {
			 *          "slengthmenu": 'display <select>'+
			 *            '<option value="10">10</option>'+
			 *            '<option value="20">20</option>'+
			 *            '<option value="30">30</option>'+
			 *            '<option value="40">40</option>'+
			 *            '<option value="50">50</option>'+
			 *            '<option value="-1">all</option>'+
			 *            '</select> records'
			 *        }
			 *      } );
			 *    } );
			 */
			"slengthmenu": "显示（show） _menu_ 项（entries）",
		
		
			/**
			 * when using ajax sourced data and during the first draw when datatables is
			 * gathering the data, this message is shown in an empty row in the table to
			 * indicate to the end user the the data is being loaded. note that this
			 * parameter is not used when loading data by server-side processing, just
			 * ajax sourced data with client-side processing.
			 *  @type string
			 *  @default loading...
			 *  @dtopt language
			 * 
			 *  @example
			 *    $(document).ready( function() {
			 *      $('#example').datatable( {
			 *        "olanguage": {
			 *          "sloadingrecords": "please wait - loading..."
			 *        }
			 *      } );
			 *    } );
			 */
			"sloadingrecords": "加载中...",
		
		
			/**
			 * text which is displayed when the table is processing a user action
			 * (usually a sort command or similar).
			 *  @type string
			 *  @default processing...
			 *  @dtopt language
			 * 
			 *  @example
			 *    $(document).ready( function() {
			 *      $('#example').datatable( {
			 *        "olanguage": {
			 *          "sprocessing": "datatables is currently busy"
			 *        }
			 *      } );
			 *    } );
			 */
			"sprocessing": "进行中...",
		
		
			/**
			 * details the actions that will be taken when the user types into the
			 * filtering input text box. the variable "_input_", if used in the string,
			 * is replaced with the html text box for the filtering input allowing
			 * control over where it appears in the string. if "_input_" is not given
			 * then the input box is appended to the string automatically.
			 *  @type string
			 *  @default search:
			 *  @dtopt language
			 * 
			 *  @example
			 *    // input text box will be appended at the end automatically
			 *    $(document).ready( function() {
			 *      $('#example').datatable( {
			 *        "olanguage": {
			 *          "ssearch": "filter records:"
			 *        }
			 *      } );
			 *    } );
			 *    
			 *  @example
			 *    // specify where the filter should appear
			 *    $(document).ready( function() {
			 *      $('#example').datatable( {
			 *        "olanguage": {
			 *          "ssearch": "apply filter _input_ to table"
			 *        }
			 *      } );
			 *    } );
			 */
			"ssearch": "搜索（search）:",
		
		
			/**
			 * all of the language information can be stored in a file on the
			 * server-side, which datatables will look up if this parameter is passed.
			 * it must store the url of the language file, which is in a json format,
			 * and the object has the same properties as the olanguage object in the
			 * initialiser object (i.e. the above parameters). please refer to one of
			 * the example language files to see how this works in action.
			 *  @type string
			 *  @default <i>empty string - i.e. disabled</i>
			 *  @dtopt language
			 * 
			 *  @example
			 *    $(document).ready( function() {
			 *      $('#example').datatable( {
			 *        "olanguage": {
			 *          "surl": "http://www.sprymedia.co.uk/datatables/lang.txt"
			 *        }
			 *      } );
			 *    } );
			 */
			"surl": "",
		
		
			/**
			 * text shown inside the table records when the is no information to be
			 * displayed after filtering. semptytable is shown when there is simply no
			 * information in the table at all (regardless of filtering).
			 *  @type string
			 *  @default no matching records found
			 *  @dtopt language
			 * 
			 *  @example
			 *    $(document).ready( function() {
			 *      $('#example').datatable( {
			 *        "olanguage": {
			 *          "szerorecords": "no records to display"
			 *        }
			 *      } );
			 *    } );
			 */
			"szerorecords": "no matching records found"
		},
	
	
		/**
		 * this parameter allows you to have define the global filtering state at
		 * initialisation time. as an object the "ssearch" parameter must be
		 * defined, but all other parameters are optional. when "bregex" is true,
		 * the search string will be treated as a regular expression, when false
		 * (default) it will be treated as a straight string. when "bsmart"
		 * datatables will use it's smart filtering methods (to word match at
		 * any point in the data), when false this will not be done.
		 *  @namespace
		 *  @extends datatable.models.osearch
		 *  @dtopt options
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "osearch": {"ssearch": "initial search"}
		 *      } );
		 *    } )
		 */
		"osearch": $.extend( {}, datatable.models.osearch ),
	
	
		/**
		 * by default datatables will look for the property 'aadata' when obtaining
		 * data from an ajax source or for server-side processing - this parameter
		 * allows that property to be changed. you can use javascript dotted object
		 * notation to get a data source for multiple levels of nesting.
		 *  @type string
		 *  @default aadata
		 *  @dtopt options
		 *  @dtopt server-side
		 * 
		 *  @example
		 *    // get data from { "data": [...] }
		 *    $(document).ready( function() {
		 *      var otable = $('#example').datatable( {
		 *        "sajaxsource": "sources/data.txt",
		 *        "sajaxdataprop": "data"
		 *      } );
		 *    } );
		 *    
		 *  @example
		 *    // get data from { "data": { "inner": [...] } }
		 *    $(document).ready( function() {
		 *      var otable = $('#example').datatable( {
		 *        "sajaxsource": "sources/data.txt",
		 *        "sajaxdataprop": "data.inner"
		 *      } );
		 *    } );
		 */
		"sajaxdataprop": "aadata",
	
	
		/**
		 * you can instruct datatables to load data from an external source using this
		 * parameter (use adata if you want to pass data in you already have). simply
		 * provide a url a json object can be obtained from. this object must include
		 * the parameter 'aadata' which is the data source for the table.
		 *  @type string
		 *  @default null
		 *  @dtopt options
		 *  @dtopt server-side
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "sajaxsource": "http://www.sprymedia.co.uk/datatables/json.php"
		 *      } );
		 *    } )
		 */
		"sajaxsource": null,
	
	
		/**
		 * this parameter can be used to override the default prefix that datatables
		 * assigns to a cookie when state saving is enabled.
		 *  @type string
		 *  @default sprymedia_datatables_
		 *  @dtopt options
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "scookieprefix": "my_datatable_",
		 *      } );
		 *    } );
		 */
		"scookieprefix": "sprymedia_datatables_",
	
	
		/**
		 * this initialisation variable allows you to specify exactly where in the
		 * dom you want datatables to inject the various controls it adds to the page
		 * (for example you might want the pagination controls at the top of the
		 * table). div elements (with or without a custom class) can also be added to
		 * aid styling. the follow syntax is used:
		 *   <ul>
		 *     <li>the following options are allowed:	
		 *       <ul>
		 *         <li>'l' - length changing</li
		 *         <li>'f' - filtering input</li>
		 *         <li>'t' - the table!</li>
		 *         <li>'i' - information</li>
		 *         <li>'p' - pagination</li>
		 *         <li>'r' - processing</li>
		 *       </ul>
		 *     </li>
		 *     <li>the following constants are allowed:
		 *       <ul>
		 *         <li>'h' - jqueryui theme "header" classes ('fg-toolbar ui-widget-header ui-corner-tl ui-corner-tr ui-helper-clearfix')</li>
		 *         <li>'f' - jqueryui theme "footer" classes ('fg-toolbar ui-widget-header ui-corner-bl ui-corner-br ui-helper-clearfix')</li>
		 *       </ul>
		 *     </li>
		 *     <li>the following syntax is expected:
		 *       <ul>
		 *         <li>'&lt;' and '&gt;' - div elements</li>
		 *         <li>'&lt;"class" and '&gt;' - div with a class</li>
		 *         <li>'&lt;"#id" and '&gt;' - div with an id</li>
		 *       </ul>
		 *     </li>
		 *     <li>examples:
		 *       <ul>
		 *         <li>'&lt;"wrapper"flipt&gt;'</li>
		 *         <li>'&lt;lf&lt;t&gt;ip&gt;'</li>
		 *       </ul>
		 *     </li>
		 *   </ul>
		 *  @type string
		 *  @default lfrtip <i>(when bjqueryui is false)</i> <b>or</b> 
		 *    <"h"lfr>t<"f"ip> <i>(when bjqueryui is true)</i>
		 *  @dtopt options
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "sdom": '&lt;"top"i&gt;rt&lt;"bottom"flp&gt;&lt;"clear"&gt;'
		 *      } );
		 *    } );
		 */
		"sdom": "lfrtip",
	
	
		/**
		 * datatables features two different built-in pagination interaction methods
		 * ('two_button' or 'full_numbers') which present different page controls to
		 * the end user. further methods can be added using the api (see below).
		 *  @type string
		 *  @default two_button
		 *  @dtopt options
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "spaginationtype": "full_numbers"
		 *      } );
		 *    } )
		 */
		"spaginationtype": "two_button",
	
	
		/**
		 * enable horizontal scrolling. when a table is too wide to fit into a certain
		 * layout, or you have a large number of columns in the table, you can enable
		 * x-scrolling to show the table in a viewport, which can be scrolled. this
		 * property can be any css unit, or a number (in which case it will be treated
		 * as a pixel measurement).
		 *  @type string
		 *  @default <i>blank string - i.e. disabled</i>
		 *  @dtopt features
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "sscrollx": "100%",
		 *        "bscrollcollapse": true
		 *      } );
		 *    } );
		 */
		"sscrollx": "",
	
	
		/**
		 * this property can be used to force a datatable to use more width than it
		 * might otherwise do when x-scrolling is enabled. for example if you have a
		 * table which requires to be well spaced, this parameter is useful for
		 * "over-sizing" the table, and thus forcing scrolling. this property can by
		 * any css unit, or a number (in which case it will be treated as a pixel
		 * measurement).
		 *  @type string
		 *  @default <i>blank string - i.e. disabled</i>
		 *  @dtopt options
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "sscrollx": "100%",
		 *        "sscrollxinner": "110%"
		 *      } );
		 *    } );
		 */
		"sscrollxinner": "",
	
	
		/**
		 * enable vertical scrolling. vertical scrolling will constrain the datatable
		 * to the given height, and enable scrolling for any data which overflows the
		 * current viewport. this can be used as an alternative to paging to display
		 * a lot of data in a small area (although paging and scrolling can both be
		 * enabled at the same time). this property can be any css unit, or a number
		 * (in which case it will be treated as a pixel measurement).
		 *  @type string
		 *  @default <i>blank string - i.e. disabled</i>
		 *  @dtopt features
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "sscrolly": "200px",
		 *        "bpaginate": false
		 *      } );
		 *    } );
		 */
		"sscrolly": "",
	
	
		/**
		 * set the http method that is used to make the ajax call for server-side
		 * processing or ajax sourced data.
		 *  @type string
		 *  @default get
		 *  @dtopt options
		 *  @dtopt server-side
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "bserverside": true,
		 *        "sajaxsource": "scripts/post.php",
		 *        "sservermethod": "post"
		 *      } );
		 *    } );
		 */
		"sservermethod": "get"
	};
	
	
	
	/**
	 * column options that can be given to datatables at initialisation time.
	 *  @namespace
	 */
	datatable.defaults.columns = {
		/**
		 * allows a column's sorting to take multiple columns into account when 
		 * doing a sort. for example first name / last name columns make sense to 
		 * do a multi-column sort over the two columns.
		 *  @type array
		 *  @default null <i>takes the value of the column index automatically</i>
		 *  @dtopt columns
		 * 
		 *  @example
		 *    // using aocolumndefs
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "aocolumndefs": [
		 *          { "adatasort": [ 0, 1 ], "atargets": [ 0 ] },
		 *          { "adatasort": [ 1, 0 ], "atargets": [ 1 ] },
		 *          { "adatasort": [ 2, 3, 4 ], "atargets": [ 2 ] }
		 *        ]
		 *      } );
		 *    } );
		 *    
		 *  @example
		 *    // using aocolumns
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "aocolumns": [
		 *          { "adatasort": [ 0, 1 ] },
		 *          { "adatasort": [ 1, 0 ] },
		 *          { "adatasort": [ 2, 3, 4 ] },
		 *          null,
		 *          null
		 *        ]
		 *      } );
		 *    } );
		 */
		"adatasort": null,
	
	
		/**
		 * you can control the default sorting direction, and even alter the behaviour
		 * of the sort handler (i.e. only allow ascending sorting etc) using this
		 * parameter.
		 *  @type array
		 *  @default [ 'asc', 'desc' ]
		 *  @dtopt columns
		 * 
		 *  @example
		 *    // using aocolumndefs
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "aocolumndefs": [
		 *          { "assorting": [ "asc" ], "atargets": [ 1 ] },
		 *          { "assorting": [ "desc", "asc", "asc" ], "atargets": [ 2 ] },
		 *          { "assorting": [ "desc" ], "atargets": [ 3 ] }
		 *        ]
		 *      } );
		 *    } );
		 *    
		 *  @example
		 *    // using aocolumns
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "aocolumns": [
		 *          null,
		 *          { "assorting": [ "asc" ] },
		 *          { "assorting": [ "desc", "asc", "asc" ] },
		 *          { "assorting": [ "desc" ] },
		 *          null
		 *        ]
		 *      } );
		 *    } );
		 */
		"assorting": [ 'asc', 'desc' ],
	
	
		/**
		 * enable or disable filtering on the data in this column.
		 *  @type boolean
		 *  @default true
		 *  @dtopt columns
		 * 
		 *  @example
		 *    // using aocolumndefs
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "aocolumndefs": [ 
		 *          { "bsearchable": false, "atargets": [ 0 ] }
		 *        ] } );
		 *    } );
		 *    
		 *  @example
		 *    // using aocolumns
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "aocolumns": [ 
		 *          { "bsearchable": false },
		 *          null,
		 *          null,
		 *          null,
		 *          null
		 *        ] } );
		 *    } );
		 */
		"bsearchable": true,
	
	
		/**
		 * enable or disable sorting on this column.
		 *  @type boolean
		 *  @default true
		 *  @dtopt columns
		 * 
		 *  @example
		 *    // using aocolumndefs
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "aocolumndefs": [ 
		 *          { "bsortable": false, "atargets": [ 0 ] }
		 *        ] } );
		 *    } );
		 *    
		 *  @example
		 *    // using aocolumns
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "aocolumns": [ 
		 *          { "bsortable": false },
		 *          null,
		 *          null,
		 *          null,
		 *          null
		 *        ] } );
		 *    } );
		 */
		"bsortable": true,
	
	
		/**
		 * <code>deprecated</code> when using fnrender() for a column, you may wish 
		 * to use the original data (before rendering) for sorting and filtering 
		 * (the default is to used the rendered data that the user can see). this 
		 * may be useful for dates etc.
		 * 
		 * please note that this option has now been deprecated and will be removed
		 * in the next version of datatables. please use mrender / mdata rather than
		 * fnrender.
		 *  @type boolean
		 *  @default true
		 *  @dtopt columns
		 *  @deprecated
		 */
		"buserendered": true,
	
	
		/**
		 * enable or disable the display of this column.
		 *  @type boolean
		 *  @default true
		 *  @dtopt columns
		 * 
		 *  @example
		 *    // using aocolumndefs
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "aocolumndefs": [ 
		 *          { "bvisible": false, "atargets": [ 0 ] }
		 *        ] } );
		 *    } );
		 *    
		 *  @example
		 *    // using aocolumns
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "aocolumns": [ 
		 *          { "bvisible": false },
		 *          null,
		 *          null,
		 *          null,
		 *          null
		 *        ] } );
		 *    } );
		 */
		"bvisible": true,
		
		
		/**
		 * developer definable function that is called whenever a cell is created (ajax source,
		 * etc) or processed for input (dom source). this can be used as a compliment to mrender
		 * allowing you to modify the dom element (add background colour for example) when the
		 * element is available.
		 *  @type function
		 *  @param {element} ntd the td node that has been created
		 *  @param {*} sdata the data for the cell
		 *  @param {array|object} odata the data for the whole row
		 *  @param {int} irow the row index for the aodata data store
		 *  @param {int} icol the column index for aocolumns
		 *  @dtopt columns
		 * 
		 *  @example
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "aocolumndefs": [ {
		 *          "atargets": [3],
		 *          "fncreatedcell": function (ntd, sdata, odata, irow, icol) {
		 *            if ( sdata == "1.7" ) {
		 *              $(ntd).css('color', 'blue')
		 *            }
		 *          }
		 *        } ]
		 *      });
		 *    } );
		 */
		"fncreatedcell": null,
	
	
		/**
		 * <code>deprecated</code> custom display function that will be called for the 
		 * display of each cell in this column.
		 *
		 * please note that this option has now been deprecated and will be removed
		 * in the next version of datatables. please use mrender / mdata rather than
		 * fnrender.
		 *  @type function
		 *  @param {object} o object with the following parameters:
		 *  @param {int}    o.idatarow the row in aodata
		 *  @param {int}    o.idatacolumn the column in question
		 *  @param {array}  o.adata the data for the row in question
		 *  @param {object} o.osettings the settings object for this datatables instance
		 *  @param {object} o.mdataprop the data property used for this column
		 *  @param {*}      val the current cell value
		 *  @returns {string} the string you which to use in the display
		 *  @dtopt columns
		 *  @deprecated
		 */
		"fnrender": null,
	
	
		/**
		 * the column index (starting from 0!) that you wish a sort to be performed
		 * upon when this column is selected for sorting. this can be used for sorting
		 * on hidden columns for example.
		 *  @type int
		 *  @default -1 <i>use automatically calculated column index</i>
		 *  @dtopt columns
		 * 
		 *  @example
		 *    // using aocolumndefs
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "aocolumndefs": [ 
		 *          { "idatasort": 1, "atargets": [ 0 ] }
		 *        ]
		 *      } );
		 *    } );
		 *    
		 *  @example
		 *    // using aocolumns
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "aocolumns": [ 
		 *          { "idatasort": 1 },
		 *          null,
		 *          null,
		 *          null,
		 *          null
		 *        ]
		 *      } );
		 *    } );
		 */
		"idatasort": -1,
	
	
		/**
		 * this parameter has been replaced by mdata in datatables to ensure naming
		 * consistency. mdataprop can still be used, as there is backwards compatibility
		 * in datatables for this option, but it is strongly recommended that you use
		 * mdata in preference to mdataprop.
		 *  @name datatable.defaults.columns.mdataprop
		 */
	
	
		/**
		 * this property can be used to read data from any json data source property,
		 * including deeply nested objects / properties. mdata can be given in a
		 * number of different ways which effect its behaviour:
		 *   <ul>
		 *     <li>integer - treated as an array index for the data source. this is the
		 *       default that datatables uses (incrementally increased for each column).</li>
		 *     <li>string - read an object property from the data source. note that you can
		 *       use javascript dotted notation to read deep properties / arrays from the
		 *       data source.</li>
		 *     <li>null - the sdefaultcontent option will be used for the cell (null
		 *       by default, so you will need to specify the default content you want -
		 *       typically an empty string). this can be useful on generated columns such 
		 *       as edit / delete action columns.</li>
		 *     <li>function - the function given will be executed whenever datatables 
		 *       needs to set or get the data for a cell in the column. the function 
		 *       takes three parameters:
		 *       <ul>
		 *         <li>{array|object} the data source for the row</li>
		 *         <li>{string} the type call data requested - this will be 'set' when
		 *           setting data or 'filter', 'display', 'type', 'sort' or undefined when 
		 *           gathering data. note that when <i>undefined</i> is given for the type
		 *           datatables expects to get the raw data for the object back</li>
		 *         <li>{*} data to set when the second parameter is 'set'.</li>
		 *       </ul>
		 *       the return value from the function is not required when 'set' is the type
		 *       of call, but otherwise the return is what will be used for the data
		 *       requested.</li>
		 *    </ul>
		 *
		 * note that prior to datatables 1.9.2 mdata was called mdataprop. the name change
		 * reflects the flexibility of this property and is consistent with the naming of
		 * mrender. if 'mdataprop' is given, then it will still be used by datatables, as
		 * it automatically maps the old name to the new if required.
		 *  @type string|int|function|null
		 *  @default null <i>use automatically calculated column index</i>
		 *  @dtopt columns
		 * 
		 *  @example
		 *    // read table data from objects
		 *    $(document).ready( function() {
		 *      var otable = $('#example').datatable( {
		 *        "sajaxsource": "sources/deep.txt",
		 *        "aocolumns": [
		 *          { "mdata": "engine" },
		 *          { "mdata": "browser" },
		 *          { "mdata": "platform.inner" },
		 *          { "mdata": "platform.details.0" },
		 *          { "mdata": "platform.details.1" }
		 *        ]
		 *      } );
		 *    } );
		 * 
		 *  @example
		 *    // using mdata as a function to provide different information for
		 *    // sorting, filtering and display. in this case, currency (price)
		 *    $(document).ready( function() {
		 *      var otable = $('#example').datatable( {
		 *        "aocolumndefs": [ {
		 *          "atargets": [ 0 ],
		 *          "mdata": function ( source, type, val ) {
		 *            if (type === 'set') {
		 *              source.price = val;
		 *              // store the computed dislay and filter values for efficiency
		 *              source.price_display = val=="" ? "" : "$"+numberformat(val);
		 *              source.price_filter  = val=="" ? "" : "$"+numberformat(val)+" "+val;
		 *              return;
		 *            }
		 *            else if (type === 'display') {
		 *              return source.price_display;
		 *            }
		 *            else if (type === 'filter') {
		 *              return source.price_filter;
		 *            }
		 *            // 'sort', 'type' and undefined all just use the integer
		 *            return source.price;
		 *          }
		 *        } ]
		 *      } );
		 *    } );
		 */
		"mdata": null,
	
	
		/**
		 * this property is the rendering partner to mdata and it is suggested that
		 * when you want to manipulate data for display (including filtering, sorting etc)
		 * but not altering the underlying data for the table, use this property. mdata
		 * can actually do everything this property can and more, but this parameter is
		 * easier to use since there is no 'set' option. like mdata is can be given
		 * in a number of different ways to effect its behaviour, with the addition of 
		 * supporting array syntax for easy outputting of arrays (including arrays of
		 * objects):
		 *   <ul>
		 *     <li>integer - treated as an array index for the data source. this is the
		 *       default that datatables uses (incrementally increased for each column).</li>
		 *     <li>string - read an object property from the data source. note that you can
		 *       use javascript dotted notation to read deep properties / arrays from the
		 *       data source and also array brackets to indicate that the data reader should
		 *       loop over the data source array. when characters are given between the array
		 *       brackets, these characters are used to join the data source array together.
		 *       for example: "accounts[, ].name" would result in a comma separated list with
		 *       the 'name' value from the 'accounts' array of objects.</li>
		 *     <li>function - the function given will be executed whenever datatables 
		 *       needs to set or get the data for a cell in the column. the function 
		 *       takes three parameters:
		 *       <ul>
		 *         <li>{array|object} the data source for the row (based on mdata)</li>
		 *         <li>{string} the type call data requested - this will be 'filter', 'display', 
		 *           'type' or 'sort'.</li>
		 *         <li>{array|object} the full data source for the row (not based on mdata)</li>
		 *       </ul>
		 *       the return value from the function is what will be used for the data
		 *       requested.</li>
		 *    </ul>
		 *  @type string|int|function|null
		 *  @default null <i>use mdata</i>
		 *  @dtopt columns
		 * 
		 *  @example
		 *    // create a comma separated list from an array of objects
		 *    $(document).ready( function() {
		 *      var otable = $('#example').datatable( {
		 *        "sajaxsource": "sources/deep.txt",
		 *        "aocolumns": [
		 *          { "mdata": "engine" },
		 *          { "mdata": "browser" },
		 *          {
		 *            "mdata": "platform",
		 *            "mrender": "[, ].name"
		 *          }
		 *        ]
		 *      } );
		 *    } );
		 * 
		 *  @example
		 *    // use as a function to create a link from the data source
		 *    $(document).ready( function() {
		 *      var otable = $('#example').datatable( {
		 *        "aocolumndefs": [
		 *        {
		 *          "atargets": [ 0 ],
		 *          "mdata": "download_link",
		 *          "mrender": function ( data, type, full ) {
		 *            return '<a href="'+data+'">download</a>';
		 *          }
		 *        ]
		 *      } );
		 *    } );
		 */
		"mrender": null,
	
	
		/**
		 * change the cell type created for the column - either td cells or th cells. this
		 * can be useful as th cells have semantic meaning in the table body, allowing them
		 * to act as a header for a row (you may wish to add scope='row' to the th elements).
		 *  @type string
		 *  @default td
		 *  @dtopt columns
		 * 
		 *  @example
		 *    // make the first column use th cells
		 *    $(document).ready( function() {
		 *      var otable = $('#example').datatable( {
		 *        "aocolumndefs": [ {
		 *          "atargets": [ 0 ],
		 *          "scelltype": "th"
		 *        } ]
		 *      } );
		 *    } );
		 */
		"scelltype": "td",
	
	
		/**
		 * class to give to each cell in this column.
		 *  @type string
		 *  @default <i>empty string</i>
		 *  @dtopt columns
		 * 
		 *  @example
		 *    // using aocolumndefs
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "aocolumndefs": [ 
		 *          { "sclass": "my_class", "atargets": [ 0 ] }
		 *        ]
		 *      } );
		 *    } );
		 *    
		 *  @example
		 *    // using aocolumns
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "aocolumns": [ 
		 *          { "sclass": "my_class" },
		 *          null,
		 *          null,
		 *          null,
		 *          null
		 *        ]
		 *      } );
		 *    } );
		 */
		"sclass": "",
		
		/**
		 * when datatables calculates the column widths to assign to each column,
		 * it finds the longest string in each column and then constructs a
		 * temporary table and reads the widths from that. the problem with this
		 * is that "mmm" is much wider then "iiii", but the latter is a longer 
		 * string - thus the calculation can go wrong (doing it properly and putting
		 * it into an dom object and measuring that is horribly(!) slow). thus as
		 * a "work around" we provide this option. it will append its value to the
		 * text that is found to be the longest string for the column - i.e. padding.
		 * generally you shouldn't need this, and it is not documented on the 
		 * general datatables.net documentation
		 *  @type string
		 *  @default <i>empty string<i>
		 *  @dtopt columns
		 *    
		 *  @example
		 *    // using aocolumns
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "aocolumns": [ 
		 *          null,
		 *          null,
		 *          null,
		 *          {
		 *            "scontentpadding": "mmm"
		 *          }
		 *        ]
		 *      } );
		 *    } );
		 */
		"scontentpadding": "",
	
	
		/**
		 * allows a default value to be given for a column's data, and will be used
		 * whenever a null data source is encountered (this can be because mdata
		 * is set to null, or because the data source itself is null).
		 *  @type string
		 *  @default null
		 *  @dtopt columns
		 * 
		 *  @example
		 *    // using aocolumndefs
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "aocolumndefs": [ 
		 *          {
		 *            "mdata": null,
		 *            "sdefaultcontent": "edit",
		 *            "atargets": [ -1 ]
		 *          }
		 *        ]
		 *      } );
		 *    } );
		 *    
		 *  @example
		 *    // using aocolumns
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "aocolumns": [ 
		 *          null,
		 *          null,
		 *          null,
		 *          {
		 *            "mdata": null,
		 *            "sdefaultcontent": "edit"
		 *          }
		 *        ]
		 *      } );
		 *    } );
		 */
		"sdefaultcontent": null,
	
	
		/**
		 * this parameter is only used in datatables' server-side processing. it can
		 * be exceptionally useful to know what columns are being displayed on the
		 * client side, and to map these to database fields. when defined, the names
		 * also allow datatables to reorder information from the server if it comes
		 * back in an unexpected order (i.e. if you switch your columns around on the
		 * client-side, your server-side code does not also need updating).
		 *  @type string
		 *  @default <i>empty string</i>
		 *  @dtopt columns
		 * 
		 *  @example
		 *    // using aocolumndefs
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "aocolumndefs": [ 
		 *          { "sname": "engine", "atargets": [ 0 ] },
		 *          { "sname": "browser", "atargets": [ 1 ] },
		 *          { "sname": "platform", "atargets": [ 2 ] },
		 *          { "sname": "version", "atargets": [ 3 ] },
		 *          { "sname": "grade", "atargets": [ 4 ] }
		 *        ]
		 *      } );
		 *    } );
		 *    
		 *  @example
		 *    // using aocolumns
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "aocolumns": [ 
		 *          { "sname": "engine" },
		 *          { "sname": "browser" },
		 *          { "sname": "platform" },
		 *          { "sname": "version" },
		 *          { "sname": "grade" }
		 *        ]
		 *      } );
		 *    } );
		 */
		"sname": "",
	
	
		/**
		 * defines a data source type for the sorting which can be used to read
		 * real-time information from the table (updating the internally cached
		 * version) prior to sorting. this allows sorting to occur on user editable
		 * elements such as form inputs.
		 *  @type string
		 *  @default std
		 *  @dtopt columns
		 * 
		 *  @example
		 *    // using aocolumndefs
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "aocolumndefs": [
		 *          { "ssortdatatype": "dom-text", "atargets": [ 2, 3 ] },
		 *          { "stype": "numeric", "atargets": [ 3 ] },
		 *          { "ssortdatatype": "dom-select", "atargets": [ 4 ] },
		 *          { "ssortdatatype": "dom-checkbox", "atargets": [ 5 ] }
		 *        ]
		 *      } );
		 *    } );
		 *    
		 *  @example
		 *    // using aocolumns
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "aocolumns": [
		 *          null,
		 *          null,
		 *          { "ssortdatatype": "dom-text" },
		 *          { "ssortdatatype": "dom-text", "stype": "numeric" },
		 *          { "ssortdatatype": "dom-select" },
		 *          { "ssortdatatype": "dom-checkbox" }
		 *        ]
		 *      } );
		 *    } );
		 */
		"ssortdatatype": "std",
	
	
		/**
		 * the title of this column.
		 *  @type string
		 *  @default null <i>derived from the 'th' value for this column in the 
		 *    original html table.</i>
		 *  @dtopt columns
		 * 
		 *  @example
		 *    // using aocolumndefs
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "aocolumndefs": [ 
		 *          { "stitle": "my column title", "atargets": [ 0 ] }
		 *        ]
		 *      } );
		 *    } );
		 *    
		 *  @example
		 *    // using aocolumns
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "aocolumns": [ 
		 *          { "stitle": "my column title" },
		 *          null,
		 *          null,
		 *          null,
		 *          null
		 *        ]
		 *      } );
		 *    } );
		 */
		"stitle": null,
	
	
		/**
		 * the type allows you to specify how the data for this column will be sorted.
		 * four types (string, numeric, date and html (which will strip html tags
		 * before sorting)) are currently available. note that only date formats
		 * understood by javascript's date() object will be accepted as type date. for
		 * example: "mar 26, 2008 5:03 pm". may take the values: 'string', 'numeric',
		 * 'date' or 'html' (by default). further types can be adding through
		 * plug-ins.
		 *  @type string
		 *  @default null <i>auto-detected from raw data</i>
		 *  @dtopt columns
		 * 
		 *  @example
		 *    // using aocolumndefs
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "aocolumndefs": [ 
		 *          { "stype": "html", "atargets": [ 0 ] }
		 *        ]
		 *      } );
		 *    } );
		 *    
		 *  @example
		 *    // using aocolumns
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "aocolumns": [ 
		 *          { "stype": "html" },
		 *          null,
		 *          null,
		 *          null,
		 *          null
		 *        ]
		 *      } );
		 *    } );
		 */
		"stype": null,
	
	
		/**
		 * defining the width of the column, this parameter may take any css value
		 * (3em, 20px etc). datatables apples 'smart' widths to columns which have not
		 * been given a specific width through this interface ensuring that the table
		 * remains readable.
		 *  @type string
		 *  @default null <i>automatic</i>
		 *  @dtopt columns
		 * 
		 *  @example
		 *    // using aocolumndefs
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "aocolumndefs": [ 
		 *          { "swidth": "20%", "atargets": [ 0 ] }
		 *        ]
		 *      } );
		 *    } );
		 *    
		 *  @example
		 *    // using aocolumns
		 *    $(document).ready( function() {
		 *      $('#example').datatable( {
		 *        "aocolumns": [ 
		 *          { "swidth": "20%" },
		 *          null,
		 *          null,
		 *          null,
		 *          null
		 *        ]
		 *      } );
		 *    } );
		 */
		"swidth": null
	};
	
	
	
	/**
	 * datatables settings object - this holds all the information needed for a
	 * given table, including configuration, data and current application of the
	 * table options. datatables does not have a single instance for each datatable
	 * with the settings attached to that instance, but rather instances of the
	 * datatable "class" are created on-the-fly as needed (typically by a 
	 * $().datatable() call) and the settings object is then applied to that
	 * instance.
	 * 
	 * note that this object is related to {@link datatable.defaults} but this 
	 * one is the internal data store for datatables's cache of columns. it should
	 * not be manipulated outside of datatables. any configuration should be done
	 * through the initialisation options.
	 *  @namespace
	 *  @todo really should attach the settings object to individual instances so we
	 *    don't need to create new instances on each $().datatable() call (if the
	 *    table already exists). it would also save passing osettings around and
	 *    into every single function. however, this is a very significant 
	 *    architecture change for datatables and will almost certainly break
	 *    backwards compatibility with older installations. this is something that
	 *    will be done in 2.0.
	 */
	datatable.models.osettings = {
		/**
		 * primary features of datatables and their enablement state.
		 *  @namespace
		 */
		"ofeatures": {
			
			/**
			 * flag to say if datatables should automatically try to calculate the
			 * optimum table and columns widths (true) or not (false).
			 * note that this parameter will be set by the initialisation routine. to
			 * set a default use {@link datatable.defaults}.
			 *  @type boolean
			 */
			"bautowidth": null,
	
			/**
			 * delay the creation of tr and td elements until they are actually
			 * needed by a driven page draw. this can give a significant speed
			 * increase for ajax source and javascript source data, but makes no
			 * difference at all fro dom and server-side processing tables.
			 * note that this parameter will be set by the initialisation routine. to
			 * set a default use {@link datatable.defaults}.
			 *  @type boolean
			 */
			"bdeferrender": null,
			
			/**
			 * enable filtering on the table or not. note that if this is disabled
			 * then there is no filtering at all on the table, including fnfilter.
			 * to just remove the filtering input use sdom and remove the 'f' option.
			 * note that this parameter will be set by the initialisation routine. to
			 * set a default use {@link datatable.defaults}.
			 *  @type boolean
			 */
			"bfilter": null,
			
			/**
			 * table information element (the 'showing x of y records' div) enable
			 * flag.
			 * note that this parameter will be set by the initialisation routine. to
			 * set a default use {@link datatable.defaults}.
			 *  @type boolean
			 */
			"binfo": null,
			
			/**
			 * present a user control allowing the end user to change the page size
			 * when pagination is enabled.
			 * note that this parameter will be set by the initialisation routine. to
			 * set a default use {@link datatable.defaults}.
			 *  @type boolean
			 */
			"blengthchange": null,
	
			/**
			 * pagination enabled or not. note that if this is disabled then length
			 * changing must also be disabled.
			 * note that this parameter will be set by the initialisation routine. to
			 * set a default use {@link datatable.defaults}.
			 *  @type boolean
			 */
			"bpaginate": null,
			
			/**
			 * processing indicator enable flag whenever datatables is enacting a
			 * user request - typically an ajax request for server-side processing.
			 * note that this parameter will be set by the initialisation routine. to
			 * set a default use {@link datatable.defaults}.
			 *  @type boolean
			 */
			"bprocessing": null,
			
			/**
			 * server-side processing enabled flag - when enabled datatables will
			 * get all data from the server for every draw - there is no filtering,
			 * sorting or paging done on the client-side.
			 * note that this parameter will be set by the initialisation routine. to
			 * set a default use {@link datatable.defaults}.
			 *  @type boolean
			 */
			"bserverside": null,
			
			/**
			 * sorting enablement flag.
			 * note that this parameter will be set by the initialisation routine. to
			 * set a default use {@link datatable.defaults}.
			 *  @type boolean
			 */
			"bsort": null,
			
			/**
			 * apply a class to the columns which are being sorted to provide a
			 * visual highlight or not. this can slow things down when enabled since
			 * there is a lot of dom interaction.
			 * note that this parameter will be set by the initialisation routine. to
			 * set a default use {@link datatable.defaults}.
			 *  @type boolean
			 */
			"bsortclasses": null,
			
			/**
			 * state saving enablement flag.
			 * note that this parameter will be set by the initialisation routine. to
			 * set a default use {@link datatable.defaults}.
			 *  @type boolean
			 */
			"bstatesave": null
		},
		
	
		/**
		 * scrolling settings for a table.
		 *  @namespace
		 */
		"oscroll": {
			/**
			 * indicate if datatables should be allowed to set the padding / margin
			 * etc for the scrolling header elements or not. typically you will want
			 * this.
			 * note that this parameter will be set by the initialisation routine. to
			 * set a default use {@link datatable.defaults}.
			 *  @type boolean
			 */
			"bautocss": null,
			
			/**
			 * when the table is shorter in height than sscrolly, collapse the
			 * table container down to the height of the table (when true).
			 * note that this parameter will be set by the initialisation routine. to
			 * set a default use {@link datatable.defaults}.
			 *  @type boolean
			 */
			"bcollapse": null,
			
			/**
			 * infinite scrolling enablement flag. now deprecated in favour of
			 * using the scroller plug-in.
			 * note that this parameter will be set by the initialisation routine. to
			 * set a default use {@link datatable.defaults}.
			 *  @type boolean
			 */
			"binfinite": null,
			
			/**
			 * width of the scrollbar for the web-browser's platform. calculated
			 * during table initialisation.
			 *  @type int
			 *  @default 0
			 */
			"ibarwidth": 0,
			
			/**
			 * space (in pixels) between the bottom of the scrolling container and 
			 * the bottom of the scrolling viewport before the next page is loaded
			 * when using infinite scrolling.
			 * note that this parameter will be set by the initialisation routine. to
			 * set a default use {@link datatable.defaults}.
			 *  @type int
			 */
			"iloadgap": null,
			
			/**
			 * viewport width for horizontal scrolling. horizontal scrolling is 
			 * disabled if an empty string.
			 * note that this parameter will be set by the initialisation routine. to
			 * set a default use {@link datatable.defaults}.
			 *  @type string
			 */
			"sx": null,
			
			/**
			 * width to expand the table to when using x-scrolling. typically you
			 * should not need to use this.
			 * note that this parameter will be set by the initialisation routine. to
			 * set a default use {@link datatable.defaults}.
			 *  @type string
			 *  @deprecated
			 */
			"sxinner": null,
			
			/**
			 * viewport height for vertical scrolling. vertical scrolling is disabled
			 * if an empty string.
			 * note that this parameter will be set by the initialisation routine. to
			 * set a default use {@link datatable.defaults}.
			 *  @type string
			 */
			"sy": null
		},
		
		/**
		 * language information for the table.
		 *  @namespace
		 *  @extends datatable.defaults.olanguage
		 */
		"olanguage": {
			/**
			 * information callback function. see 
			 * {@link datatable.defaults.fninfocallback}
			 *  @type function
			 *  @default null
			 */
			"fninfocallback": null
		},
		
		/**
		 * browser support parameters
		 *  @namespace
		 */
		"obrowser": {
			/**
			 * indicate if the browser incorrectly calculates width:100% inside a
			 * scrolling element (ie6/7)
			 *  @type boolean
			 *  @default false
			 */
			"bscrolloversize": false
		},
		
		/**
		 * array referencing the nodes which are used for the features. the 
		 * parameters of this object match what is allowed by sdom - i.e.
		 *   <ul>
		 *     <li>'l' - length changing</li>
		 *     <li>'f' - filtering input</li>
		 *     <li>'t' - the table!</li>
		 *     <li>'i' - information</li>
		 *     <li>'p' - pagination</li>
		 *     <li>'r' - processing</li>
		 *   </ul>
		 *  @type array
		 *  @default []
		 */
		"aanfeatures": [],
		
		/**
		 * store data information - see {@link datatable.models.orow} for detailed
		 * information.
		 *  @type array
		 *  @default []
		 */
		"aodata": [],
		
		/**
		 * array of indexes which are in the current display (after filtering etc)
		 *  @type array
		 *  @default []
		 */
		"aidisplay": [],
		
		/**
		 * array of indexes for display - no filtering
		 *  @type array
		 *  @default []
		 */
		"aidisplaymaster": [],
		
		/**
		 * store information about each column that is in use
		 *  @type array
		 *  @default []
		 */
		"aocolumns": [],
		
		/**
		 * store information about the table's header
		 *  @type array
		 *  @default []
		 */
		"aoheader": [],
		
		/**
		 * store information about the table's footer
		 *  @type array
		 *  @default []
		 */
		"aofooter": [],
		
		/**
		 * search data array for regular expression searching
		 *  @type array
		 *  @default []
		 */
		"asdatasearch": [],
		
		/**
		 * store the applied global search information in case we want to force a 
		 * research or compare the old search to a new one.
		 * note that this parameter will be set by the initialisation routine. to
		 * set a default use {@link datatable.defaults}.
		 *  @namespace
		 *  @extends datatable.models.osearch
		 */
		"oprevioussearch": {},
		
		/**
		 * store the applied search for each column - see 
		 * {@link datatable.models.osearch} for the format that is used for the
		 * filtering information for each column.
		 *  @type array
		 *  @default []
		 */
		"aopresearchcols": [],
		
		/**
		 * sorting that is applied to the table. note that the inner arrays are
		 * used in the following manner:
		 * <ul>
		 *   <li>index 0 - column number</li>
		 *   <li>index 1 - current sorting direction</li>
		 *   <li>index 2 - index of assorting for this column</li>
		 * </ul>
		 * note that this parameter will be set by the initialisation routine. to
		 * set a default use {@link datatable.defaults}.
		 *  @type array
		 *  @todo these inner arrays should really be objects
		 */
		"aasorting": null,
		
		/**
		 * sorting that is always applied to the table (i.e. prefixed in front of
		 * aasorting).
		 * note that this parameter will be set by the initialisation routine. to
		 * set a default use {@link datatable.defaults}.
		 *  @type array|null
		 *  @default null
		 */
		"aasortingfixed": null,
		
		/**
		 * classes to use for the striping of a table.
		 * note that this parameter will be set by the initialisation routine. to
		 * set a default use {@link datatable.defaults}.
		 *  @type array
		 *  @default []
		 */
		"asstripeclasses": null,
		
		/**
		 * if restoring a table - we should restore its striping classes as well
		 *  @type array
		 *  @default []
		 */
		"asdestroystripes": [],
		
		/**
		 * if restoring a table - we should restore its width 
		 *  @type int
		 *  @default 0
		 */
		"sdestroywidth": 0,
		
		/**
		 * callback functions array for every time a row is inserted (i.e. on a draw).
		 *  @type array
		 *  @default []
		 */
		"aorowcallback": [],
		
		/**
		 * callback functions for the header on each draw.
		 *  @type array
		 *  @default []
		 */
		"aoheadercallback": [],
		
		/**
		 * callback function for the footer on each draw.
		 *  @type array
		 *  @default []
		 */
		"aofootercallback": [],
		
		/**
		 * array of callback functions for draw callback functions
		 *  @type array
		 *  @default []
		 */
		"aodrawcallback": [],
		
		/**
		 * array of callback functions for row created function
		 *  @type array
		 *  @default []
		 */
		"aorowcreatedcallback": [],
		
		/**
		 * callback functions for just before the table is redrawn. a return of 
		 * false will be used to cancel the draw.
		 *  @type array
		 *  @default []
		 */
		"aopredrawcallback": [],
		
		/**
		 * callback functions for when the table has been initialised.
		 *  @type array
		 *  @default []
		 */
		"aoinitcomplete": [],
	
		
		/**
		 * callbacks for modifying the settings to be stored for state saving, prior to
		 * saving state.
		 *  @type array
		 *  @default []
		 */
		"aostatesaveparams": [],
		
		/**
		 * callbacks for modifying the settings that have been stored for state saving
		 * prior to using the stored values to restore the state.
		 *  @type array
		 *  @default []
		 */
		"aostateloadparams": [],
		
		/**
		 * callbacks for operating on the settings object once the saved state has been
		 * loaded
		 *  @type array
		 *  @default []
		 */
		"aostateloaded": [],
		
		/**
		 * cache the table id for quick access
		 *  @type string
		 *  @default <i>empty string</i>
		 */
		"stableid": "",
		
		/**
		 * the table node for the main table
		 *  @type node
		 *  @default null
		 */
		"ntable": null,
		
		/**
		 * permanent ref to the thead element
		 *  @type node
		 *  @default null
		 */
		"nthead": null,
		
		/**
		 * permanent ref to the tfoot element - if it exists
		 *  @type node
		 *  @default null
		 */
		"ntfoot": null,
		
		/**
		 * permanent ref to the tbody element
		 *  @type node
		 *  @default null
		 */
		"ntbody": null,
		
		/**
		 * cache the wrapper node (contains all datatables controlled elements)
		 *  @type node
		 *  @default null
		 */
		"ntablewrapper": null,
		
		/**
		 * indicate if when using server-side processing the loading of data 
		 * should be deferred until the second draw.
		 * note that this parameter will be set by the initialisation routine. to
		 * set a default use {@link datatable.defaults}.
		 *  @type boolean
		 *  @default false
		 */
		"bdeferloading": false,
		
		/**
		 * indicate if all required information has been read in
		 *  @type boolean
		 *  @default false
		 */
		"binitialised": false,
		
		/**
		 * information about open rows. each object in the array has the parameters
		 * 'ntr' and 'nparent'
		 *  @type array
		 *  @default []
		 */
		"aoopenrows": [],
		
		/**
		 * dictate the positioning of datatables' control elements - see
		 * {@link datatable.model.oinit.sdom}.
		 * note that this parameter will be set by the initialisation routine. to
		 * set a default use {@link datatable.defaults}.
		 *  @type string
		 *  @default null
		 */
		"sdom": null,
		
		/**
		 * which type of pagination should be used.
		 * note that this parameter will be set by the initialisation routine. to
		 * set a default use {@link datatable.defaults}.
		 *  @type string 
		 *  @default two_button
		 */
		"spaginationtype": "two_button",
		
		/**
		 * the cookie duration (for bstatesave) in seconds.
		 * note that this parameter will be set by the initialisation routine. to
		 * set a default use {@link datatable.defaults}.
		 *  @type int
		 *  @default 0
		 */
		"icookieduration": 0,
		
		/**
		 * the cookie name prefix.
		 * note that this parameter will be set by the initialisation routine. to
		 * set a default use {@link datatable.defaults}.
		 *  @type string
		 *  @default <i>empty string</i>
		 */
		"scookieprefix": "",
		
		/**
		 * callback function for cookie creation.
		 * note that this parameter will be set by the initialisation routine. to
		 * set a default use {@link datatable.defaults}.
		 *  @type function
		 *  @default null
		 */
		"fncookiecallback": null,
		
		/**
		 * array of callback functions for state saving. each array element is an 
		 * object with the following parameters:
		 *   <ul>
		 *     <li>function:fn - function to call. takes two parameters, osettings
		 *       and the json string to save that has been thus far created. returns
		 *       a json string to be inserted into a json object 
		 *       (i.e. '"param": [ 0, 1, 2]')</li>
		 *     <li>string:sname - name of callback</li>
		 *   </ul>
		 *  @type array
		 *  @default []
		 */
		"aostatesave": [],
		
		/**
		 * array of callback functions for state loading. each array element is an 
		 * object with the following parameters:
		 *   <ul>
		 *     <li>function:fn - function to call. takes two parameters, osettings 
		 *       and the object stored. may return false to cancel state loading</li>
		 *     <li>string:sname - name of callback</li>
		 *   </ul>
		 *  @type array
		 *  @default []
		 */
		"aostateload": [],
		
		/**
		 * state that was loaded from the cookie. useful for back reference
		 *  @type object
		 *  @default null
		 */
		"oloadedstate": null,
		
		/**
		 * source url for ajax data for the table.
		 * note that this parameter will be set by the initialisation routine. to
		 * set a default use {@link datatable.defaults}.
		 *  @type string
		 *  @default null
		 */
		"sajaxsource": null,
		
		/**
		 * property from a given object from which to read the table data from. this
		 * can be an empty string (when not server-side processing), in which case 
		 * it is  assumed an an array is given directly.
		 * note that this parameter will be set by the initialisation routine. to
		 * set a default use {@link datatable.defaults}.
		 *  @type string
		 */
		"sajaxdataprop": null,
		
		/**
		 * note if draw should be blocked while getting data
		 *  @type boolean
		 *  @default true
		 */
		"bajaxdataget": true,
		
		/**
		 * the last jquery xhr object that was used for server-side data gathering. 
		 * this can be used for working with the xhr information in one of the 
		 * callbacks
		 *  @type object
		 *  @default null
		 */
		"jqxhr": null,
		
		/**
		 * function to get the server-side data.
		 * note that this parameter will be set by the initialisation routine. to
		 * set a default use {@link datatable.defaults}.
		 *  @type function
		 */
		"fnserverdata": null,
		
		/**
		 * functions which are called prior to sending an ajax request so extra 
		 * parameters can easily be sent to the server
		 *  @type array
		 *  @default []
		 */
		"aoserverparams": [],
		
		/**
		 * send the xhr http method - get or post (could be put or delete if 
		 * required).
		 * note that this parameter will be set by the initialisation routine. to
		 * set a default use {@link datatable.defaults}.
		 *  @type string
		 */
		"sservermethod": null,
		
		/**
		 * format numbers for display.
		 * note that this parameter will be set by the initialisation routine. to
		 * set a default use {@link datatable.defaults}.
		 *  @type function
		 */
		"fnformatnumber": null,
		
		/**
		 * list of options that can be used for the user selectable length menu.
		 * note that this parameter will be set by the initialisation routine. to
		 * set a default use {@link datatable.defaults}.
		 *  @type array
		 *  @default []
		 */
		"alengthmenu": null,
		
		/**
		 * counter for the draws that the table does. also used as a tracker for
		 * server-side processing
		 *  @type int
		 *  @default 0
		 */
		"idraw": 0,
		
		/**
		 * indicate if a redraw is being done - useful for ajax
		 *  @type boolean
		 *  @default false
		 */
		"bdrawing": false,
		
		/**
		 * draw index (idraw) of the last error when parsing the returned data
		 *  @type int
		 *  @default -1
		 */
		"idrawerror": -1,
		
		/**
		 * paging display length
		 *  @type int
		 *  @default 10
		 */
		"_idisplaylength": 10,
	
		/**
		 * paging start point - aidisplay index
		 *  @type int
		 *  @default 0
		 */
		"_idisplaystart": 0,
	
		/**
		 * paging end point - aidisplay index. use fndisplayend rather than
		 * this property to get the end point
		 *  @type int
		 *  @default 10
		 *  @private
		 */
		"_idisplayend": 10,
		
		/**
		 * server-side processing - number of records in the result set
		 * (i.e. before filtering), use fnrecordstotal rather than
		 * this property to get the value of the number of records, regardless of
		 * the server-side processing setting.
		 *  @type int
		 *  @default 0
		 *  @private
		 */
		"_irecordstotal": 0,
	
		/**
		 * server-side processing - number of records in the current display set
		 * (i.e. after filtering). use fnrecordsdisplay rather than
		 * this property to get the value of the number of records, regardless of
		 * the server-side processing setting.
		 *  @type boolean
		 *  @default 0
		 *  @private
		 */
		"_irecordsdisplay": 0,
		
		/**
		 * flag to indicate if jquery ui marking and classes should be used.
		 * note that this parameter will be set by the initialisation routine. to
		 * set a default use {@link datatable.defaults}.
		 *  @type boolean
		 */
		"bjui": null,
		
		/**
		 * the classes to use for the table
		 *  @type object
		 *  @default {}
		 */
		"oclasses": {},
		
		/**
		 * flag attached to the settings object so you can check in the draw 
		 * callback if filtering has been done in the draw. deprecated in favour of
		 * events.
		 *  @type boolean
		 *  @default false
		 *  @deprecated
		 */
		"bfiltered": false,
		
		/**
		 * flag attached to the settings object so you can check in the draw 
		 * callback if sorting has been done in the draw. deprecated in favour of
		 * events.
		 *  @type boolean
		 *  @default false
		 *  @deprecated
		 */
		"bsorted": false,
		
		/**
		 * indicate that if multiple rows are in the header and there is more than 
		 * one unique cell per column, if the top one (true) or bottom one (false) 
		 * should be used for sorting / title by datatables.
		 * note that this parameter will be set by the initialisation routine. to
		 * set a default use {@link datatable.defaults}.
		 *  @type boolean
		 */
		"bsortcellstop": null,
		
		/**
		 * initialisation object that is used for the table
		 *  @type object
		 *  @default null
		 */
		"oinit": null,
		
		/**
		 * destroy callback functions - for plug-ins to attach themselves to the
		 * destroy so they can clean up markup and events.
		 *  @type array
		 *  @default []
		 */
		"aodestroycallback": [],
	
		
		/**
		 * get the number of records in the current record set, before filtering
		 *  @type function
		 */
		"fnrecordstotal": function ()
		{
			if ( this.ofeatures.bserverside ) {
				return parseint(this._irecordstotal, 10);
			} else {
				return this.aidisplaymaster.length;
			}
		},
		
		/**
		 * get the number of records in the current record set, after filtering
		 *  @type function
		 */
		"fnrecordsdisplay": function ()
		{
			if ( this.ofeatures.bserverside ) {
				return parseint(this._irecordsdisplay, 10);
			} else {
				return this.aidisplay.length;
			}
		},
		
		/**
		 * set the display end point - aidisplay index
		 *  @type function
		 *  @todo should do away with _idisplayend and calculate it on-the-fly here
		 */
		"fndisplayend": function ()
		{
			if ( this.ofeatures.bserverside ) {
				if ( this.ofeatures.bpaginate === false || this._idisplaylength == -1 ) {
					return this._idisplaystart+this.aidisplay.length;
				} else {
					return math.min( this._idisplaystart+this._idisplaylength, 
						this._irecordsdisplay );
				}
			} else {
				return this._idisplayend;
			}
		},
		
		/**
		 * the datatables object for this table
		 *  @type object
		 *  @default null
		 */
		"oinstance": null,
		
		/**
		 * unique identifier for each instance of the datatables object. if there
		 * is an id on the table node, then it takes that value, otherwise an
		 * incrementing internal counter is used.
		 *  @type string
		 *  @default null
		 */
		"sinstance": null,
	
		/**
		 * tabindex attribute value that is added to datatables control elements, allowing
		 * keyboard navigation of the table and its controls.
		 */
		"itabindex": 0,
	
		/**
		 * div container for the footer scrolling table if scrolling
		 */
		"nscrollhead": null,
	
		/**
		 * div container for the footer scrolling table if scrolling
		 */
		"nscrollfoot": null
	};

	/**
	 * extension object for datatables that is used to provide all extension options.
	 * 
	 * note that the <i>datatable.ext</i> object is available through
	 * <i>jquery.fn.datatable.ext</i> where it may be accessed and manipulated. it is
	 * also aliased to <i>jquery.fn.datatableext</i> for historic reasons.
	 *  @namespace
	 *  @extends datatable.models.ext
	 */
	datatable.ext = $.extend( true, {}, datatable.models.ext );
	
	$.extend( datatable.ext.ostdclasses, {
		"stable": "datatable",
	
		/* two buttons buttons */
		"spageprevenabled": "paginate_enabled_previous",
		"spageprevdisabled": "paginate_disabled_previous",
		"spagenextenabled": "paginate_enabled_next",
		"spagenextdisabled": "paginate_disabled_next",
		"spagejuinext": "",
		"spagejuiprev": "",
		
		/* full numbers paging buttons */
		"spagebutton": "paginate_button",
		"spagebuttonactive": "paginate_active",
		"spagebuttonstaticdisabled": "paginate_button paginate_button_disabled",
		"spagefirst": "first",
		"spageprevious": "previous",
		"spagenext": "next",
		"spagelast": "last",
		
		/* striping classes */
		"sstripeodd": "odd",
		"sstripeeven": "even",
		
		/* empty row */
		"srowempty": "datatables_empty",
		
		/* features */
		"swrapper": "datatables_wrapper",
		"sfilter": "datatables_filter",
		"sinfo": "datatables_info",
		"spaging": "datatables_paginate paging_", /* note that the type is postfixed */
		"slength": "datatables_length",
		"sprocessing": "datatables_processing",
		
		/* sorting */
		"ssortasc": "sorting_asc",
		"ssortdesc": "sorting_desc",
		"ssortable": "sorting", /* sortable in both directions */
		"ssortableasc": "sorting_asc_disabled",
		"ssortabledesc": "sorting_desc_disabled",
		"ssortablenone": "sorting_disabled",
		"ssortcolumn": "sorting_", /* note that an int is postfixed for the sorting order */
		"ssortjuiasc": "",
		"ssortjuidesc": "",
		"ssortjui": "",
		"ssortjuiascallowed": "",
		"ssortjuidescallowed": "",
		"ssortjuiwrapper": "",
		"ssorticon": "",
		
		/* scrolling */
		"sscrollwrapper": "datatables_scroll",
		"sscrollhead": "datatables_scrollhead",
		"sscrollheadinner": "datatables_scrollheadinner",
		"sscrollbody": "datatables_scrollbody",
		"sscrollfoot": "datatables_scrollfoot",
		"sscrollfootinner": "datatables_scrollfootinner",
		
		/* misc */
		"sfooterth": "",
		"sjuiheader": "",
		"sjuifooter": ""
	} );
	
	
	$.extend( datatable.ext.ojuiclasses, datatable.ext.ostdclasses, {
		/* two buttons buttons */
		"spageprevenabled": "fg-button ui-button ui-state-default ui-corner-left",
		"spageprevdisabled": "fg-button ui-button ui-state-default ui-corner-left ui-state-disabled",
		"spagenextenabled": "fg-button ui-button ui-state-default ui-corner-right",
		"spagenextdisabled": "fg-button ui-button ui-state-default ui-corner-right ui-state-disabled",
		"spagejuinext": "ui-icon ui-icon-circle-arrow-e",
		"spagejuiprev": "ui-icon ui-icon-circle-arrow-w",
		
		/* full numbers paging buttons */
		"spagebutton": "fg-button ui-button ui-state-default",
		"spagebuttonactive": "fg-button ui-button ui-state-default ui-state-disabled",
		"spagebuttonstaticdisabled": "fg-button ui-button ui-state-default ui-state-disabled",
		"spagefirst": "first ui-corner-tl ui-corner-bl",
		"spagelast": "last ui-corner-tr ui-corner-br",
		
		/* features */
		"spaging": "datatables_paginate fg-buttonset ui-buttonset fg-buttonset-multi "+
			"ui-buttonset-multi paging_", /* note that the type is postfixed */
		
		/* sorting */
		"ssortasc": "ui-state-default",
		"ssortdesc": "ui-state-default",
		"ssortable": "ui-state-default",
		"ssortableasc": "ui-state-default",
		"ssortabledesc": "ui-state-default",
		"ssortablenone": "ui-state-default",
		"ssortjuiasc": "css_right ui-icon ui-icon-triangle-1-n",
		"ssortjuidesc": "css_right ui-icon ui-icon-triangle-1-s",
		"ssortjui": "css_right ui-icon ui-icon-carat-2-n-s",
		"ssortjuiascallowed": "css_right ui-icon ui-icon-carat-1-n",
		"ssortjuidescallowed": "css_right ui-icon ui-icon-carat-1-s",
		"ssortjuiwrapper": "datatables_sort_wrapper",
		"ssorticon": "datatables_sort_icon",
		
		/* scrolling */
		"sscrollhead": "datatables_scrollhead ui-state-default",
		"sscrollfoot": "datatables_scrollfoot ui-state-default",
		
		/* misc */
		"sfooterth": "ui-state-default",
		"sjuiheader": "fg-toolbar ui-toolbar ui-widget-header ui-corner-tl ui-corner-tr ui-helper-clearfix",
		"sjuifooter": "fg-toolbar ui-toolbar ui-widget-header ui-corner-bl ui-corner-br ui-helper-clearfix"
	} );
	
	/*
	 * variable: opagination
	 * purpose:  
	 * scope:    jquery.fn.datatableext
	 */
	$.extend( datatable.ext.opagination, {
		/*
		 * variable: two_button
		 * purpose:  standard two button (forward/back) pagination
		 * scope:    jquery.fn.datatableext.opagination
		 */
		"two_button": {
			/*
			 * function: opagination.two_button.fninit
			 * purpose:  initialise dom elements required for pagination with forward/back buttons only
			 * returns:  -
			 * inputs:   object:osettings - datatables settings object
			 *           node:npaging - the div which contains this pagination control
			 *           function:fncallbackdraw - draw function which must be called on update
			 */
			"fninit": function ( osettings, npaging, fncallbackdraw )
			{
				var olang = osettings.olanguage.opaginate;
				var oclasses = osettings.oclasses;
				var fnclickhandler = function ( e ) {
					if ( osettings.oapi._fnpagechange( osettings, e.data.action ) )
					{
						fncallbackdraw( osettings );
					}
				};
	
				var sappend = (!osettings.bjui) ?
					'<a class="'+osettings.oclasses.spageprevdisabled+'" tabindex="'+osettings.itabindex+'" role="button">'+olang.sprevious+'</a>'+
					'<a class="'+osettings.oclasses.spagenextdisabled+'" tabindex="'+osettings.itabindex+'" role="button">'+olang.snext+'</a>'
					:
					'<a class="'+osettings.oclasses.spageprevdisabled+'" tabindex="'+osettings.itabindex+'" role="button"><span class="'+osettings.oclasses.spagejuiprev+'"></span></a>'+
					'<a class="'+osettings.oclasses.spagenextdisabled+'" tabindex="'+osettings.itabindex+'" role="button"><span class="'+osettings.oclasses.spagejuinext+'"></span></a>';
				$(npaging).append( sappend );
				
				var els = $('a', npaging);
				var nprevious = els[0],
					nnext = els[1];
				
				osettings.oapi._fnbindaction( nprevious, {action: "previous"}, fnclickhandler );
				osettings.oapi._fnbindaction( nnext,     {action: "next"},     fnclickhandler );
				
				/* id the first elements only */
				if ( !osettings.aanfeatures.p )
				{
					npaging.id = osettings.stableid+'_paginate';
					nprevious.id = osettings.stableid+'_previous';
					nnext.id = osettings.stableid+'_next';
	
					nprevious.setattribute('aria-controls', osettings.stableid);
					nnext.setattribute('aria-controls', osettings.stableid);
				}
			},
			
			/*
			 * function: opagination.two_button.fnupdate
			 * purpose:  update the two button pagination at the end of the draw
			 * returns:  -
			 * inputs:   object:osettings - datatables settings object
			 *           function:fncallbackdraw - draw function to call on page change
			 */
			"fnupdate": function ( osettings, fncallbackdraw )
			{
				if ( !osettings.aanfeatures.p )
				{
					return;
				}
				
				var oclasses = osettings.oclasses;
				var an = osettings.aanfeatures.p;
				var nnode;
	
				/* loop over each instance of the pager */
				for ( var i=0, ilen=an.length ; i<ilen ; i++ )
				{
					nnode = an[i].firstchild;
					if ( nnode )
					{
						/* previous page */
						nnode.classname = ( osettings._idisplaystart === 0 ) ?
						    oclasses.spageprevdisabled : oclasses.spageprevenabled;
						    
						/* next page */
						nnode = nnode.nextsibling;
						nnode.classname = ( osettings.fndisplayend() == osettings.fnrecordsdisplay() ) ?
						    oclasses.spagenextdisabled : oclasses.spagenextenabled;
					}
				}
			}
		},
		
		
		/*
		 * variable: ifullnumbersshowpages
		 * purpose:  change the number of pages which can be seen
		 * scope:    jquery.fn.datatableext.opagination
		 */
		"ifullnumbersshowpages": 5,
		
		/*
		 * variable: full_numbers
		 * purpose:  full numbers pagination
		 * scope:    jquery.fn.datatableext.opagination
		 */
		"full_numbers": {
			/*
			 * function: opagination.full_numbers.fninit
			 * purpose:  initialise dom elements required for pagination with a list of the pages
			 * returns:  -
			 * inputs:   object:osettings - datatables settings object
			 *           node:npaging - the div which contains this pagination control
			 *           function:fncallbackdraw - draw function which must be called on update
			 */
			"fninit": function ( osettings, npaging, fncallbackdraw )
			{
				var olang = osettings.olanguage.opaginate;
				var oclasses = osettings.oclasses;
				var fnclickhandler = function ( e ) {
					if ( osettings.oapi._fnpagechange( osettings, e.data.action ) )
					{
						fncallbackdraw( osettings );
					}
				};
	
				$(npaging).append(
					'<a  tabindex="'+osettings.itabindex+'" class="'+oclasses.spagebutton+" "+oclasses.spagefirst+'">'+olang.sfirst+'</a>'+
					'<a  tabindex="'+osettings.itabindex+'" class="'+oclasses.spagebutton+" "+oclasses.spageprevious+'">'+olang.sprevious+'</a>'+
					'<span></span>'+
					'<a tabindex="'+osettings.itabindex+'" class="'+oclasses.spagebutton+" "+oclasses.spagenext+'">'+olang.snext+'</a>'+
					'<a tabindex="'+osettings.itabindex+'" class="'+oclasses.spagebutton+" "+oclasses.spagelast+'">'+olang.slast+'</a>'
				);
				var els = $('a', npaging);
				var nfirst = els[0],
					nprev = els[1],
					nnext = els[2],
					nlast = els[3];
				
				osettings.oapi._fnbindaction( nfirst, {action: "first"},    fnclickhandler );
				osettings.oapi._fnbindaction( nprev,  {action: "previous"}, fnclickhandler );
				osettings.oapi._fnbindaction( nnext,  {action: "next"},     fnclickhandler );
				osettings.oapi._fnbindaction( nlast,  {action: "last"},     fnclickhandler );
				
				/* id the first elements only */
				if ( !osettings.aanfeatures.p )
				{
					npaging.id = osettings.stableid+'_paginate';
					nfirst.id =osettings.stableid+'_first';
					nprev.id =osettings.stableid+'_previous';
					nnext.id =osettings.stableid+'_next';
					nlast.id =osettings.stableid+'_last';
				}
			},
			
			/*
			 * function: opagination.full_numbers.fnupdate
			 * purpose:  update the list of page buttons shows
			 * returns:  -
			 * inputs:   object:osettings - datatables settings object
			 *           function:fncallbackdraw - draw function to call on page change
			 */
			"fnupdate": function ( osettings, fncallbackdraw )
			{
				if ( !osettings.aanfeatures.p )
				{
					return;
				}
				
				var ipagecount = datatable.ext.opagination.ifullnumbersshowpages;
				var ipagecounthalf = math.floor(ipagecount / 2);
				var ipages = math.ceil((osettings.fnrecordsdisplay()) / osettings._idisplaylength);
				var icurrentpage = math.ceil(osettings._idisplaystart / osettings._idisplaylength) + 1;
				var slist = "";
				var istartbutton, iendbutton, i, ilen;
				var oclasses = osettings.oclasses;
				var anbuttons, anstatic, npaginatelist, nnode;
				var an = osettings.aanfeatures.p;
				var fnbind = function (j) {
					osettings.oapi._fnbindaction( this, {"page": j+istartbutton-1}, function(e) {
						/* use the information in the element to jump to the required page */
						osettings.oapi._fnpagechange( osettings, e.data.page );
						fncallbackdraw( osettings );
						e.preventdefault();
					} );
				};
				
				/* pages calculation */
				if ( osettings._idisplaylength === -1 )
				{
					istartbutton = 1;
					iendbutton = 1;
					icurrentpage = 1;
				}
				else if (ipages < ipagecount)
				{
					istartbutton = 1;
					iendbutton = ipages;
				}
				else if (icurrentpage <= ipagecounthalf)
				{
					istartbutton = 1;
					iendbutton = ipagecount;
				}
				else if (icurrentpage >= (ipages - ipagecounthalf))
				{
					istartbutton = ipages - ipagecount + 1;
					iendbutton = ipages;
				}
				else
				{
					istartbutton = icurrentpage - math.ceil(ipagecount / 2) + 1;
					iendbutton = istartbutton + ipagecount - 1;
				}
	
				
				/* build the dynamic list */
				for ( i=istartbutton ; i<=iendbutton ; i++ )
				{
					slist += (icurrentpage !== i) ?
						'<a tabindex="'+osettings.itabindex+'" class="'+oclasses.spagebutton+'">'+osettings.fnformatnumber(i)+'</a>' :
						'<a tabindex="'+osettings.itabindex+'" class="'+oclasses.spagebuttonactive+'">'+osettings.fnformatnumber(i)+'</a>';
				}
				
				/* loop over each instance of the pager */
				for ( i=0, ilen=an.length ; i<ilen ; i++ )
				{
					nnode = an[i];
					if ( !nnode.haschildnodes() )
					{
						continue;
					}
					
					/* build up the dynamic list first - html and listeners */
					$('span:eq(0)', nnode)
						.html( slist )
						.children('a').each( fnbind );
					
					/* update the permanent button's classes */
					anbuttons = nnode.getelementsbytagname('a');
					anstatic = [
						anbuttons[0], anbuttons[1], 
						anbuttons[anbuttons.length-2], anbuttons[anbuttons.length-1]
					];
	
					$(anstatic).removeclass( oclasses.spagebutton+" "+oclasses.spagebuttonactive+" "+oclasses.spagebuttonstaticdisabled );
					$([anstatic[0], anstatic[1]]).addclass( 
						(icurrentpage==1) ?
							oclasses.spagebuttonstaticdisabled :
							oclasses.spagebutton
					);
					$([anstatic[2], anstatic[3]]).addclass(
						(ipages===0 || icurrentpage===ipages || osettings._idisplaylength===-1) ?
							oclasses.spagebuttonstaticdisabled :
							oclasses.spagebutton
					);
				}
			}
		}
	} );
	
	$.extend( datatable.ext.osort, {
		/*
		 * text sorting
		 */
		"string-pre": function ( a )
		{
			if ( typeof a != 'string' ) {
				a = (a !== null && a.tostring) ? a.tostring() : '';
			}
			return a.tolowercase();
		},
	
		"string-asc": function ( x, y )
		{
			return ((x < y) ? -1 : ((x > y) ? 1 : 0));
		},
		
		"string-desc": function ( x, y )
		{
			return ((x < y) ? 1 : ((x > y) ? -1 : 0));
		},
		
		
		/*
		 * html sorting (ignore html tags)
		 */
		"html-pre": function ( a )
		{
			return a.replace( /<.*?>/g, "" ).tolowercase();
		},
		
		"html-asc": function ( x, y )
		{
			return ((x < y) ? -1 : ((x > y) ? 1 : 0));
		},
		
		"html-desc": function ( x, y )
		{
			return ((x < y) ? 1 : ((x > y) ? -1 : 0));
		},
		
		
		/*
		 * date sorting
		 */
		"date-pre": function ( a )
		{
			var x = date.parse( a );
			
			if ( isnan(x) || x==="" )
			{
				x = date.parse( "01/01/1970 00:00:00" );
			}
			return x;
		},
	
		"date-asc": function ( x, y )
		{
			return x - y;
		},
		
		"date-desc": function ( x, y )
		{
			return y - x;
		},
		
		
		/*
		 * numerical sorting
		 */
		"numeric-pre": function ( a )
		{
			return (a=="-" || a==="") ? 0 : a*1;
		},
	
		"numeric-asc": function ( x, y )
		{
			return x - y;
		},
		
		"numeric-desc": function ( x, y )
		{
			return y - x;
		}
	} );
	
	
	$.extend( datatable.ext.atypes, [
		/*
		 * function: -
		 * purpose:  check to see if a string is numeric
		 * returns:  string:'numeric' or null
		 * inputs:   mixed:stext - string to check
		 */
		function ( sdata )
		{
			/* allow zero length strings as a number */
			if ( typeof sdata === 'number' )
			{
				return 'numeric';
			}
			else if ( typeof sdata !== 'string' )
			{
				return null;
			}
			
			var svalidfirstchars = "0123456789-";
			var svalidchars = "0123456789.";
			var char;
			var bdecimal = false;
			
			/* check for a valid first char (no period and allow negatives) */
			char = sdata.charat(0); 
			if (svalidfirstchars.indexof(char) == -1) 
			{
				return null;
			}
			
			/* check all the other characters are valid */
			for ( var i=1 ; i<sdata.length ; i++ ) 
			{
				char = sdata.charat(i); 
				if (svalidchars.indexof(char) == -1) 
				{
					return null;
				}
				
				/* only allowed one decimal place... */
				if ( char == "." )
				{
					if ( bdecimal )
					{
						return null;
					}
					bdecimal = true;
				}
			}
			
			return 'numeric';
		},
		
		/*
		 * function: -
		 * purpose:  check to see if a string is actually a formatted date
		 * returns:  string:'date' or null
		 * inputs:   string:stext - string to check
		 */
		function ( sdata )
		{
			var iparse = date.parse(sdata);
			if ( (iparse !== null && !isnan(iparse)) || (typeof sdata === 'string' && sdata.length === 0) )
			{
				return 'date';
			}
			return null;
		},
		
		/*
		 * function: -
		 * purpose:  check to see if a string should be treated as an html string
		 * returns:  string:'html' or null
		 * inputs:   string:stext - string to check
		 */
		function ( sdata )
		{
			if ( typeof sdata === 'string' && sdata.indexof('<') != -1 && sdata.indexof('>') != -1 )
			{
				return 'html';
			}
			return null;
		}
	] );
	

	// jquery aliases
	$.fn.datatable = datatable;
	$.fn.datatable = datatable;
	$.fn.datatablesettings = datatable.settings;
	$.fn.datatableext = datatable.ext;


	// information about events fired by datatables - for documentation.
	/**
	 * draw event, fired whenever the table is redrawn on the page, at the same point as
	 * fndrawcallback. this may be useful for binding events or performing calculations when
	 * the table is altered at all.
	 *  @name datatable#draw
	 *  @event
	 *  @param {event} e jquery event object
	 *  @param {object} o datatables settings object {@link datatable.models.osettings}
	 */

	/**
	 * filter event, fired when the filtering applied to the table (using the build in global
	 * global filter, or column filters) is altered.
	 *  @name datatable#filter
	 *  @event
	 *  @param {event} e jquery event object
	 *  @param {object} o datatables settings object {@link datatable.models.osettings}
	 */

	/**
	 * page change event, fired when the paging of the table is altered.
	 *  @name datatable#page
	 *  @event
	 *  @param {event} e jquery event object
	 *  @param {object} o datatables settings object {@link datatable.models.osettings}
	 */

	/**
	 * sort event, fired when the sorting applied to the table is altered.
	 *  @name datatable#sort
	 *  @event
	 *  @param {event} e jquery event object
	 *  @param {object} o datatables settings object {@link datatable.models.osettings}
	 */

	/**
	 * datatables initialisation complete event, fired when the table is fully drawn,
	 * including ajax data loaded, if ajax data is required.
	 *  @name datatable#init
	 *  @event
	 *  @param {event} e jquery event object
	 *  @param {object} osettings datatables settings object
	 *  @param {object} json the json object request from the server - only
	 *    present if client-side ajax sourced data is used</li></ol>
	 */

	/**
	 * state save event, fired when the table has changed state a new state save is required.
	 * this method allows modification of the state saving object prior to actually doing the
	 * save, including addition or other state properties (for plug-ins) or modification
	 * of a datatables core property.
	 *  @name datatable#statesaveparams
	 *  @event
	 *  @param {event} e jquery event object
	 *  @param {object} osettings datatables settings object
	 *  @param {object} json the state information to be saved
	 */

	/**
	 * state load event, fired when the table is loading state from the stored data, but
	 * prior to the settings object being modified by the saved state - allowing modification
	 * of the saved state is required or loading of state for a plug-in.
	 *  @name datatable#stateloadparams
	 *  @event
	 *  @param {event} e jquery event object
	 *  @param {object} osettings datatables settings object
	 *  @param {object} json the saved state information
	 */

	/**
	 * state loaded event, fired when state has been loaded from stored data and the settings
	 * object has been modified by the loaded data.
	 *  @name datatable#stateloaded
	 *  @event
	 *  @param {event} e jquery event object
	 *  @param {object} osettings datatables settings object
	 *  @param {object} json the saved state information
	 */

	/**
	 * processing event, fired when datatables is doing some kind of processing (be it,
	 * sort, filter or anything else). can be used to indicate to the end user that
	 * there is something happening, or that something has finished.
	 *  @name datatable#processing
	 *  @event
	 *  @param {event} e jquery event object
	 *  @param {object} osettings datatables settings object
	 *  @param {boolean} bshow flag for if datatables is doing processing or not
	 */

	/**
	 * ajax (xhr) event, fired whenever an ajax request is completed from a request to 
	 * made to the server for new data (note that this trigger is called in fnserverdata,
	 * if you override fnserverdata and which to use this event, you need to trigger it in
	 * you success function).
	 *  @name datatable#xhr
	 *  @event
	 *  @param {event} e jquery event object
	 *  @param {object} o datatables settings object {@link datatable.models.osettings}
	 *  @param {object} json json returned from the server
	 */

	/**
	 * destroy event, fired when the datatable is destroyed by calling fndestroy or passing
	 * the bdestroy:true parameter in the initialisation object. this can be used to remove
	 * bound events, added dom nodes, etc.
	 *  @name datatable#destroy
	 *  @event
	 *  @param {event} e jquery event object
	 *  @param {object} o datatables settings object {@link datatable.models.osettings}
	 */
}));

}(window, document));