Karl Swedberg is a web developer at Fusionary Media in Grand Rapids, Michigan, where he spends much of his time solving problems with JavaScript and implementing design. A member of the jQuery Project Team and an active contributor to the jQuery discussion list, Karl has presented at workshops and conferences, and provided corporate training in Europe and North America.

Before he got hooked on to web development, Karl worked as a copy editor, a high-school English teacher, and a coffee house owner. He gave up his dream of becoming a professional musician in the early 1990s about the same time that he stumbled into a job at Microsoft in Redmond, Washington. He sold his hollow-body Rickenbacker ages ago, but still keeps an acoustic guitar in the basement.

Jonathan Chaffer is a member of Rapid Development Group, a web development firm located in Grand Rapids, Michigan. His work there includes overseeing and implementing projects in a wide variety of technologies, with an emphasis on PHP, MySQL, and JavaScript.

In the open source community, Jonathan has been very active in the Drupal CMS project, which has adopted jQuery as its JavaScript framework of choice. He is the creator of the Content Construction Kit, a popular module for managing structured content on Drupal sites. He is responsible for major overhauls of Drupal's menu system and developer API reference.

Jonathan lives in Grand Rapids with his wife, Jennifer.