AJAX Shopping Cart (Drag and Drop)(street s)

We have a web site running on PHP LINUX We require a drag and drop AJAX shopping cart solution to be added to this site. We have a Paypal account. We require that PayPal be used as the check out solution. Please see the screen shots for the functionality. The catalogue will consist of 72 products. Each product will have 1 additional popup image (which is different views of the original image). We require AJAX enabled preview windows (see screen shot) We require the product to be dragged and dropped into the shopping cart. The product count should increase as additional products are added. Example: If I drag and drop item A, then (1) item A will be in shopping cart If I drag and drop an additional item A, then (2) item A will be in shopping cart If I drag and drop item A out of the shopping cart, then (1) item A will be in the shopping cart If I drag and drop item A out of the shopping cart again, then the shopping cart will be empty We require you to create the AJAX shopping cart in your environment. We require you to install AJAX shopping cart in our environment on our dedicated LINUX server running PHP.