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About this Add-on
Hides and restores all toolbars (and optionally tab bar) when toggling full screen. Useful when you absolutely don't want toolbars, such as for kiosks. This also removes the small border at the top of the fullscreen window that Firefox uses to give the user a way to auto-show the collapsed toolbar on mouse-over.
Also supports optional full screen on browser start.
QUICK HOWTO: Just press F11 to go full screen (Cmd-Shift-F on Mac). Customizations are available through the settings dialog (Tools->Add-ons->Full Fullscreen->Options).