var doneScaling = false;
function onSourceDownloadProgressChanged(sender, eventArgs)
{
    if(!doneScaling)
    {
        sender.Width = myWidth;
	    sender.Height = (myWidth/(954/560));
	    var scaleFactor = myWidth / 954;
        sender.findName("LayoutRootScale").ScaleX = sender.findName("LayoutRootScale").ScaleY = scaleFactor;
        doneScaling = true;
    }
	sender.findName("uxStatus").Text =  "Loading: " + Math.round((eventArgs.progress * 1000)) / 10 + "%";
}