Been reading this one on my Kindle app, but it seems very "entry level" so far. You know of any good Intermediate to Advanced JS books out there? I have Test Driven JavaScript Development by Christian Johansen that I've dug into a bit, but have yet to finish (it's got some more "advanced" stuff I guess, currying, etc).
Those two books are recommended in this blog post; there are a few other resources mentioned you may want to look into.
I highly recommend "Secrets of JavaScript Ninja by John Resig and Bear Bibeault. It tremendously help me level up my JS skills.
http://www.manning.com/resig/