I'm trying to add a product to the cart without using the lightbox, i.e. just go straight to the cart as a full screen page. When I include https://cdn.foxycart.com/shop.storedomain.com/foxycart.js
(I removed the actual domain from that url for the purpose of this post), it won't let me do it. When I exclude it, it submits just fine (even though I get an SSL error, I think because the custom domain just hasn't been fully setup yet).
Should I just leave the foxycart.js file out, or is there something I'm doing wrong?