Fullscreen mode just got real.
A true fullscreen mode ! Without Flash !
It's quite experimental so far, but "support is coming to most browsers in the next few months". You should read John Dyer's post about that.
The plugin come with a widget and a shortcode to generate the button. Use a CSS selector to target the element you want to display in fullscreen... and that's it !
[fullscreen target="THE-CSS-SELECTOR" text="The button's text"]
Enjoy folks !