Prestashop ajax/javascript module development

I need a skilled javascript developer capable of handling the following project : - create a module for the Prestashop ecommerce solution - no flash content is allowed. Only Javascript/AJAX/CSS/HTML/PHP The project is to reproduce the web application found here : [login to view URL] The visitor first selects a basis (bracelet/necklace), and then adds some jewels by dragging and dropping them on the basis. This permits a real preview of the finished product. Once the visitor is happy, he can add all the parts used to make the bracelet to the cart and is redirected to check out and payment page. Some other features, such as, email the creation to a friend, or save an image of the bracelet have to be developed. This has to be a module for prestashop 1.3.x and 1.4.x. The technical parts are : - You have to calculate the rotation of the jewel so that it fits the bracelet with the right angle - You have to prevent the bead from going outside the bracelet. When the bead is dragged and dropped on the right screen, it must go on the bracelet evenf if the bead is dropped outside the bracelet - You have to calculate and ajust the position of the dropped bead and all the other already placed beads. This has to simulate the effect of gravity on the jewels position, ie, the first jewel has to be placed on the bottom of the bracelet. - You have to take into account the size of the bracelet, meaning, if the bracelet is 17cm wide, it will contain less beads than a bracelet which is 20cm wide, or you can reduce the size of the jewels pictures to fit a fixed size bracelet/necklace. These points must be fulfilled. I don't expect to get the smooth effect like flash version. I don't need the fall effect. The jewels can be dropped and then adjusted on the bracelet without transition effect as you can see on the lovelinks webpage. Especially, developer will get from myself the pictures of all bracelets and jewels which are transparent background png. A specification file is attached.