Designed to view full-size photos and images inline without requiring a separate web page load.

License
FancyZoom is totally free for your non-commercial website.

In a bit of an experiment: if your website is commercial (i.e. makes you money), you can license FancyZoom for $39 per site, a one-time fee.

Reference Site:
http://www.cabel.name/draft1/2008/02/fancyzoom-10.html

And for Wordpress as a Plugin
CLICK HERE

And even for Joomla
CLICK HERE