Jordi Boggiano has created Slippy, a lightweight library for building animated, browser-based slideshow presentations. Slippy is very simple — check out a short demo and view the source code. Grab the code from github.
alert() boxes (rather than the standard, boring browser alerts) to show your examples in action.
Composing a presentation is simple. Just hack a basic HTML file. Each slide is in its own
<div>, and all the markup beyond that is standard HTML. Bravo!