Nintendo NES Problem! Help Please!

[belleroni]

I was playing Super Mario Brothers but the Track meet, and couldn't get the players to move. So, as i was pressing keys, I must have hit a combination of keys to get my screen larger, with no file menu, to the left. I was wondering how I restore the screen back to normal? Thanks!

[Zach]

You have to give us more information, like what emulator you are using.