code: function ( oSettings, fnCallbackDraw )
  			{
  				if ( !oSettings.aanFeatures.p )
  				{
  					return;
  				}
  				
  				var oClasses = oSettings.oClasses;
  				var an = oSettings.aanFeatures.p;
  	
  				/* Loop over each instance of the pager */
  				for ( var i=0, iLen=an.length ; i<iLen ; i++ )
  				{
  					if ( an[i].childNodes.length !== 0 )
  					{
  						an[i].childNodes[0].className = ( oSettings._iDisplayStart === 0 ) ? 
  							oClasses.sPagePrevDisabled : oClasses.sPagePrevEnabled;
  						
  						an[i].childNodes[1].className = ( oSettings.fnDisplayEnd() == oSettings.fnRecordsDisplay() ) ? 
  							oClasses.sPageNextDisabled : oClasses.sPageNextEnabled;
  					}
  				}
  			}
docs: /*
  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