A client of mine recently wanted to collect payments on her website for event registration with her PayPal account. The catch was, Adults were $10 ea, Children (3-12) were $8 ea, and Children (3 & younger) were $5 ea. So I set out on an adventure to figure out how to do this. Obviously we didn't want to make a PayPal button for every possible combination of registration possible, that would be of been maddening. Instead, ideally I wanted to build a form on her site using some basic HTML and jQuery to pull it off. And after a little playing around, figured out just how to do it. It was also especially important that we accomplish our goal without introducing additional