Fullscreen button for your embedded games
If you want to add a fullscreen button when embedding a game onto your site just use the code below. This javascript button will work on any iframe so you could edit the onclick="goFullscreen('embededGame'); by editing the 'embededGame' to the id of your iframe.
Add the below HTML button and Javascript on the same page as the embedded game:
HTML<button onclick="goFullscreen('embededGame'); return false">Fullscreen</button><script>function goFullscreen(id) {var element = document.getElementById(id);if (element.mozRequestFullScreen) {element.mozRequestFullScreen();} else if (element.webkitRequestFullScreen) {element.webkitRequestFullScreen();}}</script>