Help me add upsells into my javascript checkout(repost)

Hi, I use the Ultracart shopping cart to process my website orders. I have had a custom javascript built using their API. Here is the javascript api manual: [login to view URL] You can look at my website here: Landing page (shipping info captured): [login to view URL] Checkout: (captures billing info and sends both shipping/billing info to the payment processor) [login to view URL] Here is what I want, shown in an easy diagram format: [login to view URL] To summarize, we are going to do the following: 1) Move the checkout to a new XHTML page. The page has the EXACT same form/data elements except the design is different (in other words the Javascript should copy right over. 2) Integrate upsells. Instead of the checkout sending the order to the payment processor, it will now go to my upsell pages to try for additional orders. 3)Test authorize $1: Because the payment is now not instantly processed, we want to try a test authorization at the checkout, right before before the customer is asked to add any upsell orders. This way if there is a payment problem, the customer can correct it right away. 4)After all upsells are presented, the actual payment amount will process (known as “authorize and CAPTURE??) and then the user will go to a confirmation page. Notes: The upsell pages are extremely simple. The XHTML code will be ready for you to implement. The user will be asked either to buy the item or reject it. If you are familiar with javascript coding with AJAX this will be an easy project. Just be sure to familiarize yourself with the javascript API (again the manual is here: [login to view URL]) Please bid on this project only if you have good communication