About the Author Kyle Loudon is a software developer at Yahoo!, where he leads a group doing user interface development. Some of Kyle’s experiences prior to joining Yahoo! include working on the user interface for the original Apple iPod, writing software for other mobile devices, and leading the user interface group at Jeppesen DataPlan (a Boeing company) in the development of a flight-planning system used by airlines around the world. He also spent a small amount of time with IBM in the early 1990s. For several years, he has taught object-oriented programming part-time at the University of Cali- fornia, Santa Cruz, while working as a software developer in Silicon Valley. Kyle received a B.S. in computer science from Purdue University in 1992 with a minor in French, and was elected there to the Phi Beta Kappa honor society. He has also done some advanced education in computer science at Stanford University. Colophon The animal on the cover of Developing Large Web Applications is a Newfoundland. Also known as a “Newf” or “Newfie,” this massive dog is 26–28 inches tall at the shoulder and weighs 100–150 pounds. As its name implies, it originated in Newfound- land, Canada, where it was used by fishermen to haul nets, carry boat lines to shore, and retrieve items that fell overboard. An agile swimmer, the Newfoundland has webbed feet and a water-resistant coat, which can be black, brown, gray, or white and black (Landseer). Newfoundlands are “gentle giants” known for their sweet, loyal dispositions and obe- dience to their masters. They rarely bark, but are protective when necessary. They are generally very good with children and other animals. They are well suited for apartment dwellers, as they tend to be relatively inactive indoors; for exercise, a daily walk is usually sufficient, though they do enjoy opportunities to play and swim. In keeping with their heritage, Newfoundlands prefer colder climates and do not do well in hot weather; they should never be left in the heat without water and shade. They are prone to certain health problems, including hip and elbow dysplasia, cystinuria (a hereditary defect indicated by calculi stones in the kidney or bladder), and subvalvular aortic stenosis, a common heart defect that can cause sudden death at an early age. Their average life expectancy is 10 years. Thanks to its muscular build and swimming prowess, the breed is frequently used in water rescues. Indeed, it seems to have an innate lifesaving ability in general: New- foundlands have been credited with saving shipwreck survivors (the 1863 wreck of the Dispatch, which carried more than 100 Irish immigrants, and the 1919 wreck of the SS Essie); navigating through blizzard conditions in Alaska and the Aleutian Islands during World War II to provide ammunition and supplies to soldiers; and, according to legend, keeping Napoleon Bonaparte afloat when rough seas knocked him overboard following his escape from exile on the island of Elba in 1815. One particularly heroic story involves the Newfoundland mascot of the Royal Rifles of Canada, called Sergeant Gander. Dur- ing the Battle of Lye Mun on Hong Kong Island in December 1941, the courageous dog retrieved a grenade thrown at the battalion and carried it off, saving several lives and sacrificing his own in the process. In 2000, nearly 60 years after his heroic act, Sgt. Gander was posthumously awarded the Dickin Medal, given to animals displaying “conspicuous gallantry” in times of war. The cover image is from Wood’s Animate Creation. The cover font is Adobe ITC Garamond. The text font is Linotype Birka; the heading font is Adobe Myriad Con- densed; and the code font is LucasFont’s TheSansMonoCondensed. . education in computer science at Stanford University. Colophon The animal on the cover of Developing Large Web Applications is a Newfoundland. Also known as a “Newf” or “Newfie,” this massive dog. lines to shore, and retrieve items that fell overboard. An agile swimmer, the Newfoundland has webbed feet and a water-resistant coat, which can be black, brown, gray, or white and black (Landseer). Newfoundlands