Just look at the pictures? This is almost always possible, but not always really nice. For this there are now a greater amount of so called. “Lightboxen“. Click on the image and the background is gray / transparent. The picture itself is in Foreground appears centered.
We want to recommend some tests of various light boxes a, the simple, simple to use and is well.
The Easy Lightbox, which is to be installed on Magento.
In the back end after installation are given a variety of settings. Thus u.a. the size of the images and the background color can be set.
Here, too, is important to note, that the extension by default in the default / default folder is kompiert (app und skin). So should other template packages are used, the files must be copied into these packages.
Used in 1.4.1.1
Found in http://www.magentocommerce.com/magento-connect/TemplatesMaster/extension/1487/magento-easy-lightbox
Another, are more recent articles on this subject HERE.