This plugin allows skin selection on category basis. The skin can be changed by just clicking on the icon in the lower left on the browser’s status panel.

You can just visit the Gallery after installing this plugin to get some skins. What’s more interesting is when you take your mouse  pointer over an image for the skin, the skin automatically gets changed in your browser!

Here are some of the skins

Features

• Enjoyable – clever effect that people enjoy using.
• Fast – the large images download after the page has fully loaded.
• Easy – integrate it into your website in minutes.
• Customisable – change the speed, keyboard behaviour, colors.
• Accessible – if JavaScript is disabled, the large image opens as link.

One good thing about it is you don’t need to load a new page or use popup windows. It just loads the images immediately on click.

The user experience is rich – people like the web 2.0 lightbox enlarge effect. Users appreciate that it is immediate – the large image enlarges on click without waiting for it to download. This gives a better experience than waiting (as with an AJAX lightbox that requests images on demand).

You can display an unlimited number of images on a page. Large images have large file sizes, so be sure to compress your images with a good ratio of size to quality (aim for a JPEG filesize of 30-70kb). You can use JPEG, PNG or GIF.

You can request a free license if you use it for non-commercial purpose like me.

Check out more here.