Cant select date from Sharepoint DateTimeControl inside TabPanel of AjaxToolKit

I am using AjaxToolKit in my webpart , when i put SharepointDateTimeControl in TabContainer , i cant select date time

this my code

<cc1:TabContainer ID="TabContainerActionDetail" runat="server" ActiveTabIndex="0"
OnActiveTabChanged="loadInformation" AutoPostBack="true" CssClass="ajax__tab_blueGrad-theme"><cc1:TabPanel ID="TabPanelAction" runat="server" HeaderText="..."><ContentTemplate><table width="100%"><tr><td class="tdhead"><SharePoint:DateTimeControl ID="datedebValue" runat="server"     Enabled="False" AutoPostBack="False"
                                    Calendar="Gregorian" CalendarImageUrl="/_layouts/images/calendar.gif" CssClassTextBox="ms-input"
                                    DateOnly="False" DatePickerFrameUrl="/_layouts/iframe.aspx" DatePickerJavaScriptUrl="/_layouts/datepicker.js"
                                    FirstDayOfWeek="-1" FirstWeekOfYear="0" HijriAdjustment="0" HonorSecondsAndMilliseconds="False"
                                    IsRequiredField="False" IsValid="True" LocaleId="1036" MaxDate="12/31/9999 23:59:59"
                                    MinDate="" SelectedDate="12/26/2013 19:17:38" ShowWeekNumber="False" TabIndex="-1"
                                    TimeOnly="False" TimeZoneID="-1" UseTimeZoneAdjustment="False" /></td>


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