code: function(element) {
  			if (bigscreen.enabled) {
  				return true;
  			}
  
  			element = element || document.body;
  			var video = _getVideo(element);
  
  			if (!video || video.webkitSupportsFullscreen === undefined) {
  				return false;
  			}
  
  			return video.readyState < video.HAVE_METADATA ? 'maybe' : video.webkitSupportsFullscreen;
  		}
docs: ### videoEnabled Mobile Safari and earlier versions of desktop Safari support sending a `<video>` into full screen, even if the `allowfullscreen` attribute isn't present on the iframe. Checks can't be performed to verify full screen capabilities unless we know about that element, and it has loaded its metadata.