If you are running an Online Store and you have a large database of product images, then you will definitely need a way to showcase your products to the users in a nice manner. So, in order to do that in Magento, you can go for a solution like adding Lightbox effect to the Product Images. Here is a Magento Extension which does it perfectly and with no errors. I have personally tested it and it works cool. You can get it from here, http://www.magentocommerce.com/extension/1487/magento-easy-lightbox...