Anonymous

                <asp:TextBox ID="txtRequestDate" runat="server"></asp:TextBox>
                <cc1:popupcontrolextender id="Popupcontrolextender2" runat="server">
                    <cc1:PopupControlProperties PopupControlID="calRequestDate" Position="bottom" TargetControlID="txtRequestDate" />
                </cc1:PopupControlExtender>
                <atlas:UpdatePanel ID="UpdatePanel1" runat="server">
                    <ContentTemplate>
                <asp:Calendar ID="calRequestDate" runat="server" BackColor="White" Font-Size="X-Small"></asp:Calendar>
                    </ContentTemplate>
                </atlas:UpdatePanel>