Ajax Conversion

I have an eCommerce (store) app written in php that currently requires an update of the page (button) before it recalculates the total and adds the selected items to a shopping cart. I need this converted to update the shopping cart and totals and save the item to the proper storage using Ajax. The primary idea is that it is virtually transparent to the user. The shopping cart which is a visible listbox like object must be added to and subtracted from along with? the Ajax code. ## Deliverables I need someone well versed in Ajax who will jump right on this and get it done quickly.