// create the loading animation and handle the progress events
function onSourceDownloadProgressChanged(sender,args) {
	var PercentLoaded = '' + Math.round(args.progress * 100) + '';
	if (PercentLoaded=='100') sender.findName("LetterContainer1").Text = "1";
	else sender.findName("LetterContainer1").Text = "0";
	if (PercentLoaded.length==2) {
	    sender.findName("LetterContainer2").Text = PercentLoaded.charAt(0);
	    sender.findName("LetterContainer3").Text = PercentLoaded.charAt(1);
	} 
    if (PercentLoaded.length==1) {
	    sender.findName("LetterContainer2").Text = "0";
	    sender.findName("LetterContainer3").Text = PercentLoaded.charAt(0);
	} 
}