<script type="text/javascript" src="swfobject.js"></script>   
  <div id="ytapiplayer">
    You need Flash player 8+ and JavaScript enabled to view this video.
  </div>

  <script type="text/javascript">

    var params = { allowScriptAccess: "always" };
    var atts = { id: "myytplayer" };
    swfobject.embedSWF("http://www.youtube.com/v/FSz_a_yx9hA&hl&enablejsapi=1&playerapiid=ytplayer",
                       "ytapiplayer", "425", "356", "8", null, null, params, atts);

    function onYouTubePlayerReady(playerId) {
        ytplayer = document.getElementById("myytplayer");
        ytplayer.mute();
    }

  </script>