I constantly flip / toggle between Tbird and FF, but having to go down to raise the hidden taskbar every time has become a pain.

My Logitech KB has 2 buttons that can do the flip, but the FF button opens a new window every time, which defeats the function.

How's about a FF and companion Tbird icon that will simply flip from Tbird to the current FF window & tab; and from FF back to Tbird?