<tr>
                  <td align="left" height="30">&nbsp;Data invio:</td><td>
                  <asp:Table runat="server" CellPadding="0" CellSpacing="0">
                  <asp:TableRow><asp:TableCell><asp:TextBox id="txDataPrivacy" runat="server" Width="80px" MaxLength="10" CssClass="stile_combo"></asp:TextBox>&nbsp;</asp:TableCell>
                  <asp:TableCell VerticalAlign="Bottom"><asp:ImageButton ID="calBtn" OnClick="calBtnClick" runat="server" SkinID="CalendarButton" />  </asp:TableCell></asp:TableRow>
                  </asp:Table>          
                                    </td>
                </tr>
                <tr><td>&nbsp;</td><td>
                <asp:Calendar ID="Calendar1" runat="server" Visible="false" SkinID="MainCalendar"
                                            OnSelectionChanged="Calendar1_SelectionChanged"></asp:Calendar>    
                                            </td></tr>
                <tr>