css.js

var player = document.getElementById("player");
	player.addEventListener("click", function(event){
		style = window.document.createElement("style");
		style.innerHTML = "iframe{width:"+window.parent.screen.width+"px;height:"+Math.floor(window.parent.screen.width*9/16)+"px;}";
		window.document.getElementById("main").appendChild(style);
		if (player.webkitRequestFullScreen)
			player.webkitRequestFullScreen();
		else if(player.mozRequestFullScreen)
			player.mozRequestFullScreen();
		else if(player.msRequestFullscreen)
			player.msRequestFullscreen();
		else if(player.requestFullScreen)
			player.requestFullScreen();
		else
			return false;	
	},false);