A tutorial about creating "Add to Cart Interaction" by using CSS and jQuery.
A floating cart that slides in when the user decides to buy an item.
Fly to is a lightweight jQuery plugin to create add to cart with cool fly effect.
A tutorial about creating handy snippet to let let users customize a product directly from the products gallery, and add it to the cart.
Minicart is a great way to improve your PayPal shopping cart integration. One simple change and your users will be able to manage their shopping cart directly from your website. Additional APIs provide you the power to customize the behavior to your needs.