UltraCart javascript checkout version 2.
This version is in maintenance mode. New web sites should use the rest_api.
The only reason this code has been posted to github is to allow you to receive notifications when bug fixes are made to the main script.
The main script is here: https://github.com/UltraCart/legacy_javascript/blob/master/checkoutapi.js
Documentation: http://docs.ultracart.com/display/ucdoc/UltraCart+Advanced+JavaScript+Checkout+API
- www.ultracart.com/api/
- https://github.com/UltraCart/rest_api
- https://github.com/UltraCart/responsive_checkout (a mobile friendly implementation of the rest_api)