He says he did not see the success page, only the confirm page. I will try adding this now and get back to you.
Just put in that code and the order was processed, but again no email. Went directly from cart_static to checkout to https://secure.authorize.net/gateway/ to https://secure.authorize.net/gateway/transact.dll. That final page has the Authorize.net receipt, but we never see our checkout_success page which shows the cart...
For which of these pages do you want the source code?