I'm migrating to PayPal advanced for my payment processor. My shopping cart is a Perl cgi script. I have the interface to PayPal working but when I pass the customer info to PayPal the PayPal iframe appears in a separate window and not on top of the customer input window.
Also, upon a successful payment or upon an error (bad CC#, bad exp date, etc.) PayPal is returning my customer to the correct url but that url is being displayed inside of the iframe.
Can anyone help?