Active fullscreen by key down

gofullscreen.js

	function keyboardShortcuts(){
		// setup the keyboard shortcuts
		console.log('keyboardShortcuts: listner ON');
		document.addEventListener('keyup', function(e) {
			console.log('keyboardShortcuts: e.keyCode',e.keyCode);
			switch(e.keyCode) {
				case 70:
					// F

				// Make the body toggle full screen.
				var isInFullScreen = (document.fullScreenElement && document.fullScreenElement !== null) ||  (document.mozFullScreen || document.webkitIsFullScreen);
				var el = document.documentElement; // Make the body go full screen.
				//	window.console.firebug
				if (isInFullScreen) {
					cancelFullScreen();
				} else {
					requestFullScreen(el);
				}
				break;
				default:
				break;
			}
		}, false);
	}	// keyboardShortcuts();
	
	function requestFullScreen(el){
		console.log('_requestFullScreen');
		// Supports most browsers and their versions.
		//https://developer.mozilla.org/en-US/docs/Web/Guide/API/DOM/Using_full_screen_mode?redirectlocale=en-US&redirectslug=Web%2FGuide%2FDOM%2FUsing_full_screen_mode
		var rfs = // for newer Webkit and Firefox
		el.requestFullScreen
		|| el.webkitRequestFullScreen
		|| el.mozRequestFullScreen
		|| el.msRequestFullScreen
		;

		if(typeof rfs!="undefined" && rfs){
			rfs.call(el);
		} else if(typeof window.ActiveXObject!="undefined"){
			// for Internet Explorer
			var wscript = new ActiveXObject("WScript.Shell");
			if (wscript!=null) {
				wscript.SendKeys("{F11}");
			}
		}
	}	// requestFullScreen();

	function cancelFullScreen(){
		console.log('_cancelFullScreen');
		// Exit full screen.
		var el = document
			,rfs = 	// for newer Webkit and Firefox
			el.exitFullscreen
			|| el.msExitFullscreen
			|| el.mozCancelFullScreen
			|| el.webkitExitFullscreen
			;
			if(typeof rfs!="undefined" && rfs){
				rfs.call(el);
			} else if(typeof window.ActiveXObject!="undefined"){
			// for Internet Explorer
			var wscript = new ActiveXObject("WScript.Shell");
			if (wscript!=null) {
				wscript.SendKeys("{F11}");
			}
		}
	}	// requestFullScreen(element);

	// init keyboardShortcuts;
	keyboardShortcuts();