Here are some functions I created for working with fullscreen in the browser.
They provide both enter/exit fullscreen across most major browsers.
function isFullScreen()
{
return (document.fullScreenElement && document.fullScreenElement !== null)
|| document.mozFullScreen
|| document.webkitIsFullScreen;
}
function requestFullScreen(element)
{
if (element.requestFullscreen)
element.requestFullscreen();
else if (element.msRequestFullscreen)
element.msRequestFullscreen();
else if (element.mozRequestFullScreen)
element.mozRequestFullScreen();
else if (element.webkitRequestFullscreen)
element.webkitRequestFullscreen();
}
function exitFullScreen()
{
if (document.exitFullscreen)
document.exitFullscreen();
else if (document.msExitFullscreen)
document.msExitFullscreen();
else if (document.mozCancelFullScreen)
document.mozCancelFullScreen();
else if (document.webkitExitFullscreen)
document.webkitExitFullscreen();
}
function toggleFullScreen(element)
{
if (isFullScreen())
exitFullScreen();
else
requestFullScreen(element || document.documentElement);
}