code: function ( source, dest )
  	{
  		var that = this;
  
  		if ( source.nodeName.toUpperCase() === "TR" || source.nodeName.toUpperCase() === "TH" ||
  			 source.nodeName.toUpperCase() === "TD" || source.nodeName.toUpperCase() === "SPAN" )
  		{
  			dest.className = source.className;
  		}
  
  		$(source).children().each( function (i) {
  			that._fnClassUpdate( $(source).children()[i], $(dest).children()[i] );
  		} );
  	}
docs: Copy the classes of all child nodes from one element to another. This implies
  that the two have identical structure - no error checking is performed to that
  fact.
  @param {element} source Node to copy classes from
  @param {element} dest Node to copy classes too