Disable field according to selected resource

Hi, I have the reservation form here: http://cabinsofchattanooga.com/reservations and I have a field for pets with prices. I want to make it so if someone selects “Hay Loft” resource, for example, then they cannot have any pets, therefore this field would either go away or be disabled. How can I do this?

No, there isn’t. You would have to write a javascript checking the selected resource and making the appropriate changes.
Regards