How do I trigger a script to run when a PopupControl gets hidden?

To put it another way: How do I trigger a script to run when a PopupControl gets hidden?

Seeing as the control toolkit handles all the event trapping and so on, I don't know what event to trap and how. Anyone know?

Hi,

the ModalPopup exposes an OnCancelScript property. You can set this property to the script that will be executed when the popup is dismissed.

Hmm ... if I was using a ModalPopup that would be a great tip, but I'm using a normal PopupControl. I've found a dirty trick - the animation property allows a javascript routine to be called when the popup closes. Initially I tried using a javascript _doPostBack to run a server-side routine, but I couldn't get that to work, so I did the whole thing client side instead. It may not be the prettiest way to do it, but hey, it works.