Scripty2 the successor of script.aculo.us
Thomas Fuchs has announced the alpha release of scripty2, the successor of well known, powerful and flexible javascript library script.aculo.us. scripty2 is designed to help you write your own delicious visual effects & user interfaces.
Check out the demo to see the possibilities scripty2 can do, however as it is still in alpha version which means there will be tweaking and rewrite into the library and it is not yet recommended for production use.
Just check out the demo, very cool. Looks like there are a lot of possibilities with not many lines of code.