One form works, other form doesn't

I have two forms up:
http://doxsystems.com/contact
and
http://doxsystems.com/buy-2

Up until now, I've been working exclusively in Chrome on OSX Lion. The first form (contact) works fine. The second form (buy-2) doesn't work at all. I click submit, it thinks for a few seconds, then the page just refreshes. Nothing shows up in email or in Entries. No notification to the user is sent. And it gets better: I switched to Safari, and after the first time I tested the form (which again failed) and the page refreshed, the Submit button changed to "Add to Bag"(!), and when I clicked it, a shopping bag icon opened on the lower right corner of the browser that, when clicked, shows the (non-existent) product in a virtual shopping bag. WTF?

Bill, it looks like you have the form inside of a product of some kind that is nestled inside a form tag.

http://grab.by/bT1u

So I believe the Add to Bag button is there because it thinks this is a product? I'm not sure what more to say here without seeing the setup of this. Is there a reason this form is created on a page like this? On the Contact Us page the form is just on a page, and is not wrapped in a form element (outside of gravity forms):

http://grab.by/bT1A

I don't know where those extra tags came from, so I'll just rebuild the page. Sorry for the headache.