The book is OK, but I can't say that I learnt a great deal from it. For starters I was not too happy that the author dislikes XHTML, preferring standard HTML, then a lot of his examples contained non-standard HTML elements. To be fair: he does mention this where he does it, but that still doesn't excuse the crime.
Seems like there's a lot of places where the chapters could have factored-out some of the repetive sections (duplication) of code, as well.
Personally, I'd just use jQuery for most of what can be achieved with this book.