//function onSourceDownloadProgressChanged(sender, eventArgs) 
//{
//    var myHost = document.getElementById("Xaml1");
//    var rectBar = myHost.content.findName("rectBar");
//    var rectBorder = myHost.content.findName("rectBorder");
//    if(eventArgs.progress) rectBar.Width = eventArgs.progress * rectBorder.Width;
//    else rectBar.Width = eventArgs.get_progress() * rectBorder.Width;
//  }

function onSourceDownloadProgressChanged(sender, eventArgs) {
    sender.findName("uxStatus").Text =
        "Loading: " + Math.round((eventArgs.progress * 1000)) / 10 + "%";
    sender.findName("uxProgressBar").ScaleY = eventArgs.progress * 356;
}