YUI 2 was an awful mess but YUI 3 is pretty good. YUI 3 actually came out a while ago (it's at version 3.4 I think). But it's gotten a lot more simpler thanks i

YUI 2 was an awful mess but YUI 3 is pretty good. YUI 3 actually came out a while ago (it's at version 3.4 I think). But it's gotten a lot more simpler thanks in part to mimicking jQuery selectors.