AJAX / PHP: Custom Shopping Card with Calendar Functionality

Need a very accessible site in PHP using AJAX which will allow the customer to purchase pre-ordered goods. (When the customer purchases a product it needs to be send out on a particular "trigger" date and not immediately). I need an innovative and intuitive interface (AJAX) that will allow the customer to buy certain products for particular dates. This is where the calendar functionality comes in. I needs to be simple and slick. ## Deliverables All required files and source code. ## Platform Cross browser compatible.