Those of you who follow my work over on Clientcide may already be familiar with it, but for the rest of you I wanted to write a blog posts here on MooTools.net about the work I've been doing on a library called Behavior - a throwback to the behavior.js library released way back in 2005 which one might consider to be philosophically an ancestor of sorts.

All well-written web sites / apps that are interactive have the same basic pattern:

Today we release MooTools Core 1.4.2 which is a small maintenance release. Upgrading from 1.4.1 should not cause any backward incompatibilities. We recommend all users upgrade to 1.4.2 as soon as possible.