Amazon look-a-like checkout completing

Our checkout page does need a make-over. The webshop is build with Xtcommerce (simular with OScommerce 2.2). Therefor we already develop a new checkout page simular to Amazon express checkout. You can open the attachment to get an impression of the new module. To bid on this project you must have excellent skills in OScommerce + Ajax + PHP + javascripting. As you can see, the project is already in a raw setup and coded but there are a some issues not done yet. I think it would cost 10-15 hours if you have the right skills. So project budget is about 200 USD. To get a good impression of the job I will send you through PM all necessary information. Finishing date 3 days after starting project. Milestone $80 by starting.