Painless JavaScript Using Prototype [JavaScript & DHTML Tutorials]
Is the sheer weight of your JavaScript code keeping you up nights? Sick of typing document.getElementById over and over (and over)? The Prototype library guarantees to relieve your script-induced stress. Let Dan take you on a whirlwind tour of this incredibly useful (but sparsely documented) collection of enhancements to the built-in JavaScript features of current browsers.