rem: var hasFocus = IsSubWindowOf(focusedWindow, messagePaneWindow, false); 
add:  var hasFocus = IsSubWindowOf(focusedWindow, messagePaneWindow); 
context: function MessagePaneHasFocus(){	var focusedWindow = top.document.commandDispatcher.focusedWindow;	var messagePaneWindow = top.frames['messagepane'];		if ( focusedWindow && messagePaneWindow && (focusedWindow != top) )	{		var hasFocus = IsSubWindowOf(focusedWindow, messagePaneWindow, false);		return hasFocus;	}		return false;}
meta: 8395	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/8395/977a2827a9ed2a56efc59e7e9a423e0c4e06bdf6/mail3PaneWindowCommands.js/clean/mailnews/base/resources/content/mail3PaneWindowCommands.js