Thanks for the reply Balinor. The mod looks like a possible solution. But it gets a bit more complicated ....
On the site I'm building, when a customer clicks on a product in the product list, the product details load up in a new window within shadowbox (
http://mjijackson.com/shadowbox/). If the "Add to Cart" button redirected the customer to a "Product Added" page, the links for "Continue Shopping" and "Checkout" would have to open the link in the parent window and then close shadowbox. I know how to close the shadowbox window: onClick="parent.Shadowbox.
close();" but I don't know about the opening links in the parent window AND closing shadowbox. Any idea if that's possible?
Also I wouldn't need to upsell products on the "Product Added" page and I'm a bit reluctant to spend money on the mod because it may not work with the way I'm trying to implement it.