I'm unable to tell what you are doing there. When I hover over the Make
Payment button, it shows the PayPal Website in the status bar. I was under
the impression that, if the button was posting back to the server, it would
not show that. I can only imagine that you are posting data somehow as a
dollar amount appears on the PayPal page. But I'm not familiar with this
enough to understand what I'm seeing.
In fact, if I implement the code you originally posted as a server-side
handler, and I click the button and get redirected to another site, and I
click the Back button, I go back to the form that redirected me and I get
redirected again.
