Address bar help/?

Ok....I think I hit something, now the address bar where all the tabs were disappeared. It reappears when I go near it but disappears when don't have the mouse on it. Used to it would stay on all the time, but now it dissappears. How can I make it so it will stay on permenentaly. Also the bottom tabs have disappeaed and only reappear when I minimize the screen. I can't see them otherwise please help!! My greatest thanks goes out to whoever can!