Entering a desired amount on payment page
Hi, I want to use ecart to create a payment page on a website. I want the user to be able to enter a desired amount of money like Church offering or Online giving that is voluntarily- this is not a fixed price like items to purchase. Does anyone know how to accomplish this through ecart? Thanks.
Secondly, is it possible to modify some of the pages in power store with ecart? Once again Thanks.