Dump Rico and prototype, use YUI and EXT

Dump Rico and prototype, use YUI and EXT

Rico code base is bad.
Prototype is not as good as JQuery anyway; also, the coding style is really not that important – once you get the JQuery idea.

EXT roots from YUI, but now is independent lib. It has LGPL, which makes it OK for commercial uses. Also, EXT has JQuery style also.

So, the best way? EXT and YUI. Also, YUI can lead you to EXT via the YUI-EXT trail!

EXT has close relation with AIR, which is good for offline etc.