add: ClearMessagePane();  
context: function FolderPaneSelectionChange(){	var tree = GetFolderTree();	if(tree)	{		var selArray = tree.selectedItems;		if ( selArray && (selArray.length == 1) )        {			ChangeFolderByDOMNode(selArray[0]);            // explicitly force the message pane to get cleared when we switch folders            ClearMessagePane();         }		else		{			var threadTree = GetThreadTree();			ClearThreadTreeSelection();			threadTree.setAttribute('ref', null);			ClearMessagePane();		}	}}
meta: 8395	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/8395/3c7a12077d5ab06ce70e757abacd361e04b5654e/commandglue.js/buggy/mailnews/base/resources/content/commandglue.js