Anyone expert in custom Paypal API in Fanpage?

I just finish code a custom Paypal button for a website which have a coupon acceptance function. It can also validate the wrong/right coupon code and can accept several selected coupons.

But the problem is that i cant bring this code into the Fanpage (Static FBML). Anyone have any ideas or suggestion?

The code is here hxxp://iphone-supplier.us/test/protected_buy.h t m l

Thanks

Your javascript should be FBJS compliant.