var ytVideoID;

function loadYouTube()
{
    var hfVID = document.getElementById("hfVideoID");    
    if (hfVID != null)
        ytVideoID = hfVID.value;
  
    if (ytVideoID != null && ytVideoID != "")
    {
        var youTubeStartUpJS = "http://gdata.youtube.com/feeds/api/videos/" + ytVideoID + "?alt=json-in-script&format=5&callback=showYoutube";
        
        var y = document.createElement("script");
            y.type = "text/javascript";
            y.src = youTubeStartUpJS;
        
        document.getElementsByTagName('body')[0].appendChild(y);
    }
}

function showYoutube(data) {
    var title = data.entry.title.$t;
    var imgurl = data.entry.media$group.media$thumbnail[3].url;
    var playerUrl = data.entry.media$group.media$player[0].url;
    
    document.getElementById('YoutubeTitle').innerHTML = title;
    
    var hlnk = document.getElementById('YoutubeHyperLink');
    if (hlnk != null)
    {
        hlnk.title = title;
        hlnk.innerHTML = '<img src="' + imgurl + '" alt="' + title + '" width="232" border="0" />'
    }
}