var win= null;
function popupDownload (productid) {
	var mypage = "/popup_download.php?productID=" + productid;
	var w = 290;
	var h = 290;
	var myname = "popupDownload";
	var winl = (screen.width-w)/2;
	var wint = (screen.height-h)/2;
	settings='height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars=no,toolbar=no'
	win=window.open(mypage,myname,settings)
	if(parseInt(navigator.appVersion) >= 4) {
		win.window.focus();
	}
}