CodeCanyon - JackBox v1.0 - Responsive Lightbox - WordPress Plugin | 5,73 MB
The JackBox stylesheets and scripts will only load into your web page if the page contains a lightbox item. This means that on the pages where no lightbox items are used, no unecessary plugin files are loaded. When JackBox CSS and javascript files are loaded, they load asynchronously, helping your web pages to load faster.
DEMO:
http://codecanyon.net/item/jackbox-responsive-lightbox-wordpress-plugin/3357551