Refresh Parent page on close of popup

Parent Page:

<script type="text/javascript" language="javascript">

        function EditDetail(id)
        {    
            var userid=document.getElementById('<%= hdnUserId.ClientId %>').value
            window.open("DailyDetails.aspx?leadDetailid="+id+"&UserId="+userid,"DailyDetails",'width=800,height=500,top=10,left=200,resizable=yes,scrollbars=yes');          
        }

 </script>

Child Page:

Write this child page code behind page:

Private Function modifyDailydtls() As Boolean

 Page.ClientScript.RegisterStartupScript(GetType(String), "close", "<script language='javascript'>window.opener.document.forms[0].submit();self.close();</script>")

End Function