Simple yet hard to manage problem

Simple yet hard to manage problem

My question is pretty simple, yet its answer isn't that easy.
Here's the deal:

I have a series of divs, floating next to each others.
When user clicks on a predefined checkbox, some of these divs disappear, using jquery's hide() function. After hide() ends, the remaining divs shift (wich is absolutely normal). What i'd like to discuss is a way to make the remaining divs "slide" in a smoother way than just that quite 'brute' non-eye-candy way.
The perfect example of what i'm trying to do was already done here with laszlo :
http://telephone-gps-mp3.fnac.com/sh665 ... lter%253D0
Play around with the 'budget' slider in the central green area ('Aide au choix'), you'll see exactly what I'm willing to do.

So, would that be possible with jquery, and how ?

Thanks a lot for your help !