If you’ve got a netbook with a 1024 x 600 pixel or lower resolution display, the F11 key is your friend when surfing the web with Firefox. That’s the button that lets you view web pages in full screen mode with no toolbars or scrollbars to impede your view.
But what if you’ve got a Dell Inspiron Mini 9 netbook which doesn’t have a full row of Fn keys? With no F11 are you doomed to forever surf the web using a browser that steals some of your preceious screen real estate?
All you have to do is install the keyconfig.xpi Firefox addon. You can either download the key configuration tool using another browser and then open it in Firefox, or just click the link in Firefox and allow the addon to install.
Once loaded, can reconfigure any Firefox hotkey by going to Tools -> Keyconfig. Scroll down until you see the Full Screen option and change the hotkey to anything you like.
via Ubuntu Mini