Header Forward Button

Thunderbird 3.0 pre keeps surprising me. New to Thunderbird 3.0 was the Forward Button in the message header. Now in Thunderbird 3.0 beta 4 the toolbar Forward button is removed, so users are left with only the header Forward button. Unfortunately I hadn't updated my extension yet to also show the dropdown menu there. Even more unfortunate was, that it wasn't simply a matter of copying the code. The toolbar button could be easily adjusted from XUL, but for the header button I had to switch to javascript. This also means that now my extension got some real strings that need to be localized...

Header Forward Button