Youtube fullscreen

HTML

<iframe id="HomeScreenVideo" width="100%" height="100%" src="https://www.youtube.com/embed/T1RFAujSCJA?vq=hd1080&amp;autoplay=1&amp;hd=1&amp;playlist=T1RFAujSCJA&amp;enablejsapi=1" frameborder="0" allowfullscreen></iframe>

JavaScript

var tag = document.createElement('script');

      tag.src = "https://www.youtube.com/iframe_api";
      var firstScriptTag = document.getElementsByTagName('script')[0];
      firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);

        var player;

        function onYouTubeIframeAPIReady() {
            player = new YT.Player('HomeScreenVideo', {
                events: {
                    'onReady': onPlayerReady
                }
            });
        }

        function onPlayerReady() {
            player.playVideo();
            // Mute!
            player.mute();
        }