[flexcoders] Popup over a form

[markgoldin_2000]

I am creating a popup window over a form. I am providing a reference to 
that form to PopUpManager. But after PopUpManager.centerPopUp the popup 
is not centered inside of the form. Can someone help, please? Also I 
want to have my popup window 100% opaque. Hocan I do that?

Thanks for help.