What is the problem in it?

[ravininave]

Hi I'm using following code

 Dim newWin As String = ("<script language='javascript'>" + "window.open('successMess.aspx' , 'Print', 'height=200, width=220, menubar=no, toolbar=no, scrollbars=no, resizable=no'); </script>")
                    ClientScript.RegisterStartupScript(Me.GetType(), "pop", newWin)

Response.Redirect(MyPanel.aspx", False)

Windows.open runs perfectly when I remore response.redirect statement and doesn't works when I add it. What could b the problem. I'm not getting.
Thanx