// popup paypal shopping cart
function launchPaypal(page) {
	var width = 900;
	var height = 575;
	var wleft = (screen.width - width) / 2;
	var wtop = (screen.height - height) / 2;
	winprops = 'height='+height+',width='+width+',top='+wtop+',left='+wleft+',location=1,toolbar=1,status=1,resizable=1,scrollbars=1';
	window.open(page, "paypal", winprops)
}