disable youtube embed playlist autoplay

http://stackoverflow.com/questions/27669780/cant-disable-youtube-embed-playlist-autoplay

<div id="player">
</div>
<script type="text/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('player', {
          height: '448',
          width: '763',
          playerVars: {
              'showinfo': 0,
              'controls': 0,
        listType: 'playlist',
        list: 'UU7D3rUX8mAc_nyAX5HKIOJg'
            },
          events: {
            'onReady': onPlayerReady,
            'onStateChange': onPlayerStateChange
          }
        });
      }
      function onPlayerReady(event) {
        // event.target.playVideo();
      }
      function play_this_video(){
 player.playVideo();
}

      function onPlayerStateChange(event) {
        if (event.data == YT.PlayerState.ENDED) {
          player.stopVideo();
        }
      }
    </script>