function onSourceDownloadProgressChanged(sender, eventArgs) {
    //var slPlugin = sender.getHost();
    //slPlugin.content.findName("LoadingText").Text = Math.round((eventArgs.progress * 100)) + "%";
    var slPlugin = sender.getHost();
    var rectBar = slPlugin.content.findName("rectBar");
    var rectBorder = slPlugin.content.findName("rectBorder");
    if (eventArgs.progress)
        rectBar.Width = eventArgs.progress * rectBorder.Width;
    else
        rectBar.Width = eventArgs.get_progress() * rectBorder.Width;
}

function onSourceDownloadComplete(sender, eventArgs) {
    window.status = "Done";
}