Demonstrates a problem with Scriptaculous' ScrollTo Effect and floats in Firefox, to wit:

In Firefox only, when you have floating elements, the ScrollTo effect goes to the top of the page, regardless of it's explicit target. The problem is that the value of document.body.scrollHeight, which is used in the calculations for Effect.ScrollTo, returns very tiny values when the page elements are floated, resulting in a scroll to 0 or to a negative number.

Everything seems to work just fine in IE 6, and IE 7, and Safari. Not tested in other browsers.