add: }  gOldNumSelected = numSelected; 
context: function ThreadPaneSelectionChange(){	var collapsed = IsThreadAndMessagePaneSplitterCollapsed();	if(!collapsed)	{		LoadSelectionIntoMessagePane();			}	var tree = GetThreadTree();	var selectedMessages = tree.selectedItems;	var numSelected = selectedMessages.length;	if(numSelected == 0 | numSelected == 1)		document.commandDispatcher.updateCommands('threadTree-select');}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/59e789c90cb37e7614536d6cc224e54367e73d14/threadPane.js/buggy/mailnews/base/resources/content/threadPane.js