Firefox with full screen mode on Mac

Some of you should have noticed that Firefox on the mac does not has a full screen mode. There is a simple hack for that. Just install a Firefox plug-in, the you will have an icon in the bottom right of Firefox where you can switch to full or normal view mode.The plug-in is FullerScreen.

References:
https://addons.mozilla.org/en-US/firefox/addon/4650
http://www.mactales.com/article/how-to-fullscreen-firefox-on-os-x-mac-using-fullscreener-plugin/