Some small web-projects used on my own homepage. Most are written in HTML5/CSS3 with no regards to backward compatability.
A photo gallery with a lightbox function. Also includes enlarging photos from a blog-like layout.
I needed popup dialogs for some functions in the photo gallery so I decided to write my own. It is constructed by a floating div that is dynamically added to the body. The contents of the div is fetched though an ajax call, so you could easily make it fetch different things depending on data input.