What is Fullsize all about?

Fullsize is an attempt to get a new <IMG> attribute called fullsize into the next version of HTML. Hopefully this site will get the attention of the W3C, and they will add fullsize to HTML and make it a standard. This is an attempt to bring something truely useful to all web developers and is by no means a completely polished idea, but rather a step in the right direction. Please visit the Fullsize Google Group to add your thoughts on how you think this idea can be improved upon.

http://www.addfullsize.com/

or

Fullsize is a plugin that replaces Lightbox. It doesn’t do slideshows, but shows big size images.

http://www.onigoetz.ch/plugins/wordpress-jquery-fullsize-plugin/