CSS Library: Image CSS: Here
CSS Image Gallery
Author: Dynamic Drive
This is a purely CSS based image gallery that displays larger versions of thumbnail images dynamically when the mouse hovers over them. A rich HTML caption can be added to the enlarged image, and every aspect of the Image Gallery exists as plain HTML on the page. The idea is to use CSS's ":hover" pseudo class to cause an element to react onMouseover. When that happens, an absolutely positioned container holding the enlarged image, anchored on the page by another container with position set to relative, is shown. Furthermore, it's possible to modify the behavior so the enlarged images are only shown onClick, though IE6 currently doesn't support this behavior well. The gallery works in IE6+, Firefox, Opera 8+.
So real, it's unreal. Or is it?
Sushi for dinner anyone?
Run wild with horses.
Note: Here the enlarged images are set to "overlay" any content that it may come in contact with. You can easily disable overlaying just by giving the gallery container (.gallerycontainer) a height set to that of the largest image's.