Virtuemart - Flexible Drop Down Shopping Cart for Joomla 2.5 - 3.x | 734 KB
Virtuemart Dropdown Shopping Cart, Now support VM2.0.xx as well. This module lets you add product to cart without refreshing page and include product thumbnail inside the mini cart. It comes with 3 different theme. Pick one that you like the most.
DEMO:
http://www.flexiblewebdesign.com/Virtuemart-Extensions/Virtuemart-Flexible-Drop-Down-Shopping-Cart