This is a test of a hovering help box. Look at the source to see how it's done. It isn't pretty and there are certainly better ways of doing it. Feel free to let me know: David Weinberger,

Any object, like this one, that has a "help=" attribute will get a hover balloon
They can include HTML markup of various sorts.
This one doesn't have any help.
This one has help. It works if you hit an internal span like this one, too.

The basic way this works: