function onSourceDownloadProgressChanged(sender, eventArgs) {
    var percents = Math.round((eventArgs.progress * 1000)) / 10;
    sender.findName("uxStatus").Text = "Loading: " + percents + "%";
    sender.findName("uxProgressBar").ScaleY = eventArgs.progress * 356;
    if (percents > 75) {
        sender.findName("uxImage").Source = "../Image/Silveos_Login.jpg";
    }
    else if (percents > 50) {
        sender.findName("uxImage").Source = "../Image/Silveos_Classic.jpg";
    }
    else if (percents > 25) {
        sender.findName("uxImage").Source = "../Image/Silveos_Modern_Programs.jpg";
    }
}