add: goUpdateCommand("button_goBack"); goUpdateCommand("button_goForward"); 
context:   displayMessageChanged : function(aFolder, aSubject, aKeywords)  {    setTitleFromFolder(aFolder, aSubject);    ClearPendingReadTimer(); // we are loading / selecting a new message so kill the mark as read timer for the currently viewed message    gCurrentMessageUri = gDBView.URIForFirstSelectedMessage;    UpdateStandAloneMessageCounts();    goUpdateCommand("button_junk");  },
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/ebd97c3b067698d6a89f3876fa38cb02903814e6/messageWindow.js/clean/mail/base/content/messageWindow.js