Hook MediaElement for Full Screen Mode
When HTML5 full screen mode is enabled, it is possible for JS to obtain the screen resolution via document.fullScreenElement's width and height properties. We need to hook MediaElement to see what we can do.
https://developer.mozilla.org/en/DOM/Using_full-screen_mode https://developer.mozilla.org/en/DOM/document.mozFullScreenElement https://developer.mozilla.org/en/DOM/element.getBoundingClientRect