Look at this nasty code for HTML5 fullscreen usage. I thought we had moved past the day and age of needing to write proprietary/browser-specific code to get things to work? I'm very dissapointed in this implementation.
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+Michael Safyan thanks for the clarification!
The browser-specific prefixes are there to say "this is still experimental, use at your own risk." Once the standard is solidified, the prefixes are unnecessary unless one is targetting older browsers prior to standardization.