code: function _get_selected(){
      	var ret_list = [];
  	var selected_strings =
  	    jQuery('#'+ sul_id).sortable('toArray', {'attribute': 'value'});
      	each(selected_strings,
      	     function(in_thing){
  		 if( in_thing && in_thing != '' ){
  		     ret_list.push(in_thing);
  		 }
  	     });
  	return ret_list;
      }
docs: Helper function to pull the values. Currently, JQuery adds a lot of extra non-attributes li tags when it creates the DnD, so filter those out to get just the fields ids.