// get browser timestamp, which should hopefully be similar to PSP time
function getTimeStamp(){
	var d=new Date();
	return d.getTime();
}

// send timestamp and product number to download, download demo version
function downloadDemo(pid){
	var url = "startdownload.php?ts=" + getTimeStamp() + "&pid=" + pid;
	window.location.href = url;
}

// display message for Return to Merchant
function payPalInfo(){
	alert("After completing your PayPal transaction, please click \"Return to Merchant\" so you can download your purchased item.");
	return true;
}