rem: messenger.SetWindow(window,null); 
add: messenger.SetWindow(window, null); 
context: function LaunchUrl(url){  var messenger = Components.classes["@mozilla.org/messenger;1"].createInstance(Components.interfaces.nsIMessenger);  messenger.SetWindow(window,null);  messenger.OpenURL(url);}
meta: 5872	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5872/90f3d8ea61a3acd5d8cf6b41e552aeb80e53980b/addressbook.js/clean/mailnews/addrbook/resources/content/addressbook.js