add:  if(messageView.showThreads) ExpandOrCollapseThreads(true); 
context: 	doCommand: function(command)	{		switch ( command )		{			case "cmd_selectAll":				var threadTree = GetThreadTree();				if ( threadTree )				{					threadTree.selectAll();					if ( threadTree.selectedItems && threadTree.selectedItems.length != 1 )						ClearMessagePane();				}				break;		}	},
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/d5696d5addb95615f67ac72f6eb85cfe7ddaf3d6/mail3PaneWindowCommands.js/buggy/mailnews/base/resources/content/mail3PaneWindowCommands.js