What do you mean by that? Try "alt+F3", it should give you the menu you need...go to "advance" then un-check "full screen". Hope it will work for you.
An couple of weeks ago I've had this annoying problem with Firefox. Eventually I figured out the problem, but how do I solve it?
I keep losing the "Title Bar", therefore I can no longer "Go Back" until I "Customize" and restore the "Title Bar".
Any help would be appreciated.