How to embed “paypal web payment standard” in the product page?

[jessela]

Hi all,
I'm trying to use "paypal web payment standard" in my site, but when I copy the paypal button code and paste in the product description and save, the code automatically changed.
This first line code <form action="https://www.paypal.com/cgi-bin/webscr" method="post"> is changed to <form method="post">
Does anyone know how to go around this problem?

Thanks everyone in advance!