hello, I've tried your suggestions, but it's still not working on my website.
my setup:
WORDPRESS: 3.5
WOOCOMMERCE: 1.6.6
THEME: Function (Woothemes)
and I've changed the two files:
add-to-cart-variation.min.js (lorsabyan code)
add-to-cart-variation.js (samueljeden code)
what else can I do?