Galleria
http://devkick.com/lab/galleria/
Galleria (demo) is a javascript image gallery written in jQuery. It loads the images one by one from an unordered list and displays thumbnails when each image is loaded. It will create thumbnails for you if you choose so, scaled or unscaled, centered and cropped inside a fixed thumbnail box defined by CSS.
hoverIntent
http://cherne.net/brian/resources/jquery.hoverIntent.html
hoverIntent (demo) is a plug-in that attempts to determine the user’s intent… like a crystal ball, only with mouse movement! It works like (and was derived from) jQuery’s built-in hover. However, instead of immediately calling the onMouseOver function, it waits until the user’s mouse slows down enough before making the call.
Fancybox
http://fancy.klade.lv/
FancyBox is a simple and fancy alternative to lightbox with support for single images, grouped images, inline content, and iFramed content. In grouped images, an indicator of which image you were viewing when closing the zoom view puts this plug-in above alternative lightbox.