How do I use "OpenWindow" to open a window with a new web page inside an existing one and controls its dimension as well as make it dragable?

I am trying to us "OpenWindow" to open a window with a new web page inside an existing one with the following code. What am I doing wrong?Protected Sub Go_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Go.Click dim addr1 as string = "http://" Dim addr2 as string = "msn.com" Page.ClientScript.RegisterStartupScript(Me.GetType(), "OpenWindow", "window.open(addr1+addr2, '_self');", True) End Sub Also, how can I control the size of the new windows as well as move it? Thanks
 
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