rem: if( aDataObject.data != undefined ) 
add: if( 'data' in aDataObject ) 
context:     set_Radiogroup:      function ( aElementID, aDataObject )        {                    var element = wsm.contentArea.document.getElementById( aElementID );          wsm.generic_Set( element, aDataObject );          if( aDataObject.data != undefined )            {               element.selectedItem = element.getElementsByAttribute( "data", aDataObject.data )[0];            }        },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/66c41c404dac77d053bf9bb78c8621d6e34494dc/nsWidgetStateManager.js/buggy/xpfe/global/resources/content/nsWidgetStateManager.js