rem: gBrowser.hideMessage(null, "top"); 
add: gBrowser.getNotificationBox().removeCurrentNotification(); 
context:   dontShowMessage: function ()  {    var showMessage = gPrefService.getBoolPref("privacy.popups.showBrowserMessage");    var firstTime = gPrefService.getBoolPref("privacy.popups.firstTime");    // If the info message is showing at the top of the window, and the user has never    // hidden the message before, show an info box telling the user where the info    // will be displayed.    if (showMessage && firstTime)      this._displayPageReportFirstTime();    gPrefService.setBoolPref("privacy.popups.showBrowserMessage", !showMessage);    gBrowser.hideMessage(null, "top");  },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/b5bd5dba5a7a9646c345026052eba1b0898bc841/browser.js/buggy/browser/base/content/browser.js