Eloquent Javascript

2nd edition of the Eloquent Javascript book online

Javascript design patterns

An online book on Learning Javascript design patterns.

Javascript games

Html5 and javascript games articles

Javascript

Some javascript tips from Simon Thorneycroft and Jonathan Hodgson

Javascript intellisense

The Visual Web Developer 2005 Express edition has Javascript intellisense support just like Orcas.

I have been writing more Javascript recently, and this could really save a lot of time. And, it's free.