Open Popup Window and Close the window that Opened it

I'm using some code that I found on this site to open a Popup window with a Button Click for a Crystal Report:

Dim PopUpScript As String = ""

Page.ClientScript.RegisterStartupScript(Me.GetType(), "PopUpWindow", PopUpScript, False)
After the Popup Window shows the Report I would like to close the window that opened this popup window.
 Thanks,
Mark

just add

window.close();
in 
Dim PopUpScript As String = ""
I think it ask for promt before closing current window as this is inbuilt facility
Suyog
I am just using my free time,but if it helps you then my mark my post as   answer