Using the jQuery BetterGrow Plugin, I created a BetterGrow APEX Plugin. The APEX part is just a simple wrapper of the jQuery Plugin - so all the credits go to "The Product Guy" who came up with that one.
It just does this:
the demo site. And download it from apex-plugin.com. There already was an similar plugin, created by Martin. On the demo page you can see both, so pick the one you like most!