Would like to thank you for a nice contribution, but there's one bug in the 1.3 version (at least on my website).
On the webpage: checkout_shipping.php
The "Continue" button is no longer clickable, therefore customers can't move on with their orders
I've compared the code with the original code, and I cannot find any difference or places to change it.
Other than that, it seems to work well. (Of course I havent tested further than the checkout_shipping.php, but still)