add: if (event.target.localName != "treecell" && event.target.localName != "treeitem") return false; 
context: function BeginDragFolderTree(event){	debugDump("BeginDragFolderTree\n");	return(false);}
meta: 8395	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/8395/3c912fc37e2ceca1f53ff649ca3f932beaa1ae1d/messengerdnd.js/clean/mailnews/base/resources/content/messengerdnd.js