rem: top.controllers.appendController(DefaultController);  
add: top.controllers.insertControllerAt(0, DefaultController); 
context: function SetupCommandUpdateHandlers(){	dump("SetupCommandUpdateHandlers\n");	var widget;		// folder pane	widget = GetFolderTree();	if ( widget )		widget.controllers.appendController(FolderPaneController);		// thread pane	widget = GetThreadTree();	if ( widget )		widget.controllers.appendController(ThreadPaneController);			top.controllers.appendController(DefaultController);}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/445cd82e25daa21fc7a4cf5701c72b296ff5f8b8/widgetglue.js/buggy/mailnews/base/resources/content/widgetglue.js