Can you fix my browser (again) ?

Question

I have mozilla firefox and and the part at the top has disappeared, (where it says file, view, tools, favorites) it is gone and it is just blank there. What's wrong and how do I fix it?
I know I posted this twice but hitting f11 doesn't work or refreshing the screen, but there is something else I noticed when you right click and all those options(delete, cut, copy, paste, etc) are supposed to come up, they don't all that appears is the itty bitty box that doesn't do any thing. And my big brother is being a pain and won't help even though he knows computers pretty well.
HELP!

Answer 1

You should try reinstalling firefox.