function add_to_cart(li,qty) {
	var myRequest = new Request({
		url: '/cgi-local/shop_add_to_cart.cgi?method=ajax&li=' + li + '&qty=' + (qty || 1),
		method: 'get',
		onSuccess: function(responseText) {
			Mediabox.open(responseText, 'Shopping Cart Added', '500 200');
		}
	});
	myRequest.send();
}