We use the JShop shopping cart store ([url removed, login to view]). We need to make a coding modification so that if either of our two Pepper Spray products are in their cart, AND if their delivery state is one of 3 US states, it will NOT let them proceed with the order. The script should be able to see what's in their cart, and if any of the 3 states are selected with either of those pepper spray products, it won't allow them to make the purchase.
I have tried to include the necessary PHP files which you may need, and a screenshot of the checkout page. If you need more clarification, please let me know. JShop uses a full template system.