My effort at learning to use a fullscreen HTML 5 canvas.
I discovered a bug in Firefox fullscreen mode on OS X when using personas that throws off the mouse and drawing coordinates. I will be reporting the issue. Other than that, this seems to work well. It is a combination of a few different examples and explanations.
The Firefox bug is at: https://bugzilla.mozilla.org/show_bug.cgi?id=842153
I haven't yet tested this with Opera.