source – lifehacker.com/
Firefox: If you love the screen coverage full screen mode provides, but you rely on the toolbar too much to have it constantly popping in and out of existence, this simple tweak will keep it in sight.
It seems counter productive to willingly give up some of that screen space you gained by switching to full screen mode, but if you rely on the toolbar or you just like having the address and search boxes visible, all it takes is a single right-click tweak. When you’re in full screen mode, move the mouse up to the top of the screen to bring the address bar and toolbar down, right-click and uncheck “Hide Toolbars”. From then on, you’ll still get the expanded view in full screen mode but you’ll also enjoy a compacted address and toolbar interface.
