help with add to cart button and shipment and payment system

[gabriela]

Hi
I have a problem with my VM2.0.20b and no have time for to solve it. Now the "Add to Cart" button stopped working.
Before, I wanted to eliminate the possibility of adding payment methods and shipping is so grateful also to help me with this. It should not be that hard because the system worked. I can pay US20 by paypal...!

[jjk]

How about this:
https://forum.virtuemart.net/index.php?topic=102107.0