I want to implement the new PayPal Smart Payment Buttons and everything works ok so far.

Pop Up does open. 

Server processes everything. 

Payment is completed.

The the pop up closes and shows a javascript message "success" (or whatever i want to show in that message)

But my question ist after payment is completed how can i show a "success / thank you for shopping" page?

If i put in a redirect via javascript it does not work. 

i didn't find anything in the docs about a thank you page after payment.