How can I stop the modal popup from disappearing when a postback occurs?

Hello,

I have a problem.
How can I stop the modal popup from disappearing when a postback occurs.

For example, if I have a button on the modal "form", a click makes it dissappear.

Help!

Thanks!

UPDATE:
I just tried wrapping the postback controls in an updatepanel.

Seems to work so far...this the recommended way?