You all know the "You've got new answers!" notification bar on SO. I'd like the same thing in a Form, preferably just as smooth. Is there a simple way? Or do I have to completely create this myself?

My searches did not yield any good results, only lots of progress bars and popups in the system notification area, but that's not what I'm looking for.

The messages I want to display belong to a Form, not to the whole application