Walter Zorn to the rescue again!
His vector graphics Javascript library is one of the easiest to work with and now Walter has surpassed himself with the easiest Tooltip / Help bubble javascript library.
I first used Walter’s Work with my Javascript AJAX testing application where his vector graphics module made client-side charting a piece of cake. Recently when I was looking for a simpler and more powerful tooltip library (YUI fell short on this one) I came across Walters work again.
The reason I like this library so much more is that I do not need any onDomReady events to instantiate the tooltips. It is nothing more than a mouseover event to a javascript function. Additionally, I have found that alot of tooltip libraries out there tend to break when the tooltip bubble bumps against the page viewport, and the bubble gets cutoff. Walter’s library responds properly in these curcumstances so I have found my new tooltip library.