[jQuery] Slide in Popup

Hi folks,
I have been searching and searching, but cloudn't find it.
I'm looking for a slide-in popup (from the top) that does fade's its
background while it slide's. Something like http://mad4milk.net/ when
you press contact. But then in jQuery. I hope someone has the
knowledge how to do it (with jqModal, Fancybox).
Kind regards, Maarten