The hardest part about using drupal's javascript features is knowing where to begin: they remained an arcane mystery to me until today. After drinking a bit of whiskey, and studying how core was using Drupal.behavior, I learned it couldn't be simpler. If you don't know how to do this, take a moment:
The purpose of this book is to provide an overview of the jQuery JavaScript library; when you're done with the book, you should be able to complete basic tasks using jQuery, and have a solid basis from which to continue your learning. This book was designed as material to be used in a classroom setting, but you may find it useful for individual study.