1<html>
2  <body>
3    <iframe id="player_frame" type="text/html" width="640" height="390"
4        src=""
5        frameborder="0"></iframe>
6    <br>
7    <script>
8      function play(video_url) {
9        document.getElementById('player_frame').src = video_url;
10     }
11      var tag = document.createElement('script');
12      tag.src = "http://www.youtube.com/iframe_api";
13      var firstScriptTag = document.getElementsByTagName('script')[0];
14      firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);
15      var player;
16      function onYouTubeIframeAPIReady() {
17        new YT.Player('player_frame', {
18          events: {
19            'onReady': onPlayerReady,
20          }
21        });
22      }
23      function onPlayerReady(event) {
24        player = event.target;
25        player.playVideo();
26      }
27    </script>
28  </body>
29</html>
30