The product I'm referring to is:
http://www.hardwoodcanes.com/extra-r...tips-p-19.html

If you just select "add to cart" without selecting a size, it just replies "your shopping cart is empty". Isn't it supposed to stay on the product page, and say something like, "you forgot to select a size", or something like that? I'd like an error message to be displayed, rather than just say your cart is empty.

Thank you.