rem: while(parent.nodeName == 'treeitem') 
add: while(parent.localName == 'treeitem') 
context: function FindTopLevelMessage(startMessage){	var currentTop = startMessage;	var parent = startMessage.parentNode.parentNode;	while(parent.nodeName == 'treeitem')	{		currentTop = parent;		parent = parent.parentNode.parentNode;	}	return currentTop;}
meta: 5872	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5872/3d7acb9e0d5bebb397c92245d9812ba08e10b04b/msgViewNavigation.js/clean/mailnews/base/resources/content/msgViewNavigation.js