Random Javascript/Ruby on Rails Links:
Badgerfish - Translate XML to JSON (The JSON looks a bit ugly to me...)
Canada On Rails talks
Testing the Rails
logger.js - Simple logging engine for Javascript
The DOM Event Model
The encytemedia blog - Good information on how to use Prototype more effectively
DOM:element - From developer.mozilla.org
Working with Events in Prototype
Event Selectors for Prototype
Prototype meets Ruby - Enumerable Array and Hash.
Painless Javascript with Prototype
Good practices with Javascript
Top Ten Javascript functions
The Firefox DOM Inspector
Microsoft JScript Reference
Javascript tutorial at Quirksmode
moo.fx documentation
CSS Cheatsheet
Advanced Javascript at sergiopererira.com
Rails and AJAX