Modal Popup Won't drag.

It did at one point, but now it no longer wants to. Any thoughts on what I added that may have broken it?

<asp:ModalPopupExtender ID="mpeAuditNote" runat="server"
                    PopupControlID="pnlAuditNote"
                    TargetControlID="btnHackNote"
                    BackgroundCssClass="modalBackground"
                    DropShadow="True"
                    OkControlID="btnHackOKNote"
                    PopupDragHandleControlID="pnlDragNote"
                    CancelControlID="btnCancelNote" Enabled="True" Drag="true" DynamicServicePath=""></asp:ModalPopupExtender><asp:Panel ID="pnlAuditNote" CssClass="pnlBackGround" runat="server" Width="450px"><asp:UpdateProgress ID="UpdateProgress4" runat="server"><ProgressTemplate><div style="text-align: center; color: Red; font-size: 12px; font-weight: bold; position: relative;"><img src="images/ewestcor_loader.gif" alt="Loading" /></div></ProgressTemplate></asp:UpdateProgress><asp:UpdatePanel ID="UpdatePanel8" runat="server"><ContentTemplate><div style="padding: 5px;"><asp:Panel ID="pnlDragNote" runat="server"><asp:Label ID="Label6" runat="server" Text="Audit Note" Font-Bold="True" Font-Size="Large"></asp:Label></asp:Panel><br /><asp:TextBox ID="txtAuditNote" runat="server" TextMode="MultiLine" Height="100px" Width="90%"></asp:TextBox></div></ContentTemplate><Triggers><asp:AsyncPostBackTrigger ControlID="btnAuditNote" EventName="Click" /><asp:PostBackTrigger ControlID="btnOKNote" /><%--<asp:AsyncPostBackTrigger ControlID="btnCancelNote" EventName="Click" />--%></Triggers></asp:UpdatePanel>