Peter-Paul Koch is an internationally recognized JavaScript expert. His site Quirksmode.org has existed since 1998 and has consistently contained high-quality JavaScript information. It currently draws about 1,000 unique visitors per day, most of which search for specific JavaScript information. This site serves as a knowledge repository for Microsoft’s Internet Explorer team (see here, and Apple’s Safari team refers to PPK's DOM Compatibility Tables for an overview of Safari’s JavaScript capabilities (see here. Known around the Web simply as PPK, Koch is a member of the Web Standards Project DOM Scripting Task Force and has written its JavaScript Manifesto. PPK has published numerous articles on other sites, including: O’Reilly, Apple Developer Connection, A List Apart, Digital Web Magazine, and Evolt. PPK has also been a technical editor for David Flanagan’s JavaScript, the Definitive Reference, O’Reilly, 4th edition, 2001, and has written a JavaScript chapter in Glasshaus’s Web Professional’s Handbook, which has appeared online at WebReference, as well as JavaScript chapters for a Dutch book. Peter-Paul is also the founder and moderator of WDF-DOM, an important advanced JavaScript mailing list that counts most JavaScript gurus among its membership.