John Pollock is employed as a Web Administrator during the day and works on Web sites and other projects during the evening. He runs a Web site devoted to Web development and design: Script the Web (www.scripttheweb.com). He also is a contributor to Web Xpertz (www.webxpertz.net), a help community for Web developers. John holds a Bachelor of Arts in English from Sam Houston State University and currently lives in Huntsville, Texas with his wife, Heather, and his daughters, Eva and Elizabeth.

Christie Sorenson is a senior software engineer at ZingChart. She has worked on JavaScript-based systems in analytics, content management, and business applications since 1997 and has been fascinated with the evolution of the language and its users. She has collaborated on several books, including Ajax: The Complete Reference and HTML & CSS: The Complete Reference and was also the tech editor on JavaScript: The Complete Reference and HTML: A Beginner’s Guide. She holds a Bachelor of Science in Computer Science from University of California, San Diego, and now lives in San Francisco with her husband, Luke, and daughters, Ali and Keira.