Nicholas C. Zakas has a BS in Computer Science from Merrimack College and an MBA from Endicott College. He is the author of Professional JavaScript for Web Developers (Wiley 2005), Professional Ajax (1st and 2nd editions, Wiley 2007 and 2007) as well as several online articles. Nicholas works for Yahoo! as a frontend engineer and has worked in web development for more than 6 years, during which time he has helped develop web solutions in use at some of the largest companies in the world. Nicholas can be reached through his web site at www.nczonline.net.