That's the number one feature I want in a Lightbox: for middle-clicking and ctrl-clicking to open the image in a new tab, rather than running some slow-as-molas

That's the number one feature I want in a Lightbox: for middle-clicking and ctrl-clicking to open the image in a new tab, rather than running some slow-as-molasses JavaScript animation that pops up a modal box and completely screws with my expectations of how a web page will behave. This CSS-based lightbox actually looks like the first good Lightbox I've seen, in terms of usability.