Great book on DHTML/Javascript

One of my customers asked me to "beef up" on using Javascript, AJAX, etc. I have been reading a great book: DHTML Utopia.

Usually, I dislike working in Javascript but this book has really turned me on to some good techniques. If your web applications are running on a local area network (low latency), doing every thing on the server is fairly OK but it is better to do some things locally on the client browser when running over the internet. Human usability studies have shown how productivity-destroying it is to make users wait for more than a second or so when they are working.

I especially like the way Stuart sticks to 'the standards'. Personally, I refuse to spend too much time worrying about Internet Explorer strangeness (unless someone is paying me to - even then I don't like it).