Triple drop down menu
JavaScript Triple Drop-down Menu tutorial
Double drop down list box in client side Javascript
Excellent tutorial on making a JavaScript drop down menu with dynamic selections.
Scroll Js
Make Internal Links Scroll Smoothly with JavaScript
Limit Textarea
controls a maximum textarea input amount and updates a small counter with how many characters are left with each keystroke. Dynamic fix now allows you to use this script in multiple textboxes on a page. Easy!
Javascript Kit
General tutorial site with a leaning towards JavaScript.