I've been playing with hints, and have had a great deal of trouble getting it to work, largely because much of the documentation does not agree
with the sample code.
The biggest problem was simply the naming of the hints script instance variable. The documentation variously refers to it as myHints, myHint, Hints, myTip and myTips. It should not matter what it's called - we instantiate an instance in our cfg script, then send it events using the same name.
Other than that, I've found the Tigra scripts pretty good, though I'll repeat my request that you ensure that your demo pages all pass W3C validation.