function addToCart(sku) {
	var span = 'span_addcart';
	var url = '/shop/cart_js.php';
	var pars = 'action=add&sku='+sku;
	var myAjax = new Ajax.Updater(span, url, { method: 'get', parameters: pars });
	alert('The item has now been added to your "My Favorites" list.');
}
function updateCart() {
	form = document.getElementById('cart');
	form.submit();
}