rem: var threadTree = frames[0].frames[1].frames[0].document.getElementById('threadTree'); 
add: var threadTree = GetThreadPane().document.getElementById('threadTree'); 
context: function GetThreadTree(){	var threadTree = frames[0].frames[1].frames[0].document.getElementById('threadTree');	return threadTree;}
meta: 5872	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5872/c2d6a0ed81b0fc6389a9ff05a145c7115ff6aa23/commandglue.js/buggy/mailnews/base/resources/content/commandglue.js