How to exit Firefox

Hi
I have successfully installed firefox, however, the only way i can exit the app is to pull the power cable. I have been looking for a post to solve this problem but i cant seem to find one. Any suggestions greatly appreciated.

Cheers

Karl

Usually you can press the menu button on the remote and it will close out of the app. If that does not work then you can try going up to the top-left of the screen with your cursor and try and click on FireFox in the menu bar and then Quit.