<div id="div6" runat="server" ></div>
            <asp:panel id="PnlConfX" runat="server" align="center" class="confirm" style="width:290px;">
                <img align="middle" src="images/info.png" alt="" />                                                              
                    il sistema ha rilevato una modifica ...... vuoi continuare?<br />                                
                    <asp:button runat="server" ID="btnSi" Text="Si" Width="50px" />
                    <asp:button runat="server" ID="btnNo" Text="No" Width="50px" />                
            </asp:panel>                                                     
            <cc1:ModalPopupExtender ID="MPE_Conf" runat="server"  
                BackgroundCssClass="modalBackground" DropShadow="true" 
            PopupControlID="PnlConfX" TargetControlID="div6">
            </cc1:ModalPopupExtender>