content topmenu chrome/content/

overlay chrome://browser/content/browser.xul chrome://topmenu/content/overlay.xul

overlay chrome://messenger/content/messenger.xul chrome://topmenu/content/overlay.xul
overlay chrome://messenger/content/messengercompose/messengercompose.xul chrome://topmenu/content/overlay.xul
overlay chrome://messenger/content/addressbook/addressbook.xul chrome://topmenu/content/overlay.xul