Chapter 1-6, 10, and appC contains the code files for the examples developed in the respective chapters.

Folder bookstore contains the code files for examples developed in Chapter 7,8, and 9.

Scripts folder contains the jQuery scripts, for version 1.1.3a. 

For newer versions please check the website http://docs.jquery.com/Downloading_jQuery

The latest jQuery file can be replaced with the jQuery.js file under the script folder.