simple js with paypal, please help

[arale]

http://www.zendecode.com/index.php?view=purchase

I want people enter number of files, they'll receive prices instant.
I want to create a paypal button, when user click it, it'll goto paypal page and pay amount they received. Can you help me? I just use paypal, I don't know... :confused:

[talentcoder]

just follow their manual - http://www.paypal.com/cgi-bin/webscr?cmd=p/pdn/intro-outside
It's easy to set up a paypal form on your page.