Ajax Calendar Issue in asp.net

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C#

ASP.NET

C#3.5

Hi guys,

i'm using bootstrap theme,
where in ASP.NET page i have a repeater in which i'm binding Web User Control,

In the web user control i have one textbox with AjaxCalendarExtender.

The issue is:
The calendar is not displaying 'Thu, Fri n Sat' days.

code of web user control:

<table>
<tr>
   <td>
            Issue Date
        </td>
        <td>
         <asp:TextBox ID="txtppisdate" CssClass="input-large" runat="server"></asp:TextBox>
                     
        <asp:CalendarExtender ID="CalendarExtender2" runat="server"
                         PopupButtonID="lbnppisdate" TargetControlID="txtppisdate">
                        </asp:CalendarExtender></td>
    </tr>

asp.net code of repeater, where i'm placing this web user control

<asp:UpdatePanel ID="UpdatePanel2" runat="server">
                       <ContentTemplate>
                           <asp:Repeater ID="Repeater1" runat="server">
                               <HeaderTemplate>
                                   <table class="table table-bordered">
                                       <thead class="color-1">
                                           <tr>
                                               <th>
                                                   S.No#
                                               </th>
                                               <th>
                                                   Details
                                               </th>
                                           </tr>
                                       </thead>
                                       <tbody>
                               </HeaderTemplate>
                               <ItemTemplate>
                                   <tr id="itemrow">
                                       <td valign="middle" style="width: 50px">
                                           
                                               <%# Container.ItemIndex + 1 %>
                                           
                                       </td>
                                       <td>
                                           <uc1:FamilyPassport ID="FamilyPassport1"  runat="server" />
                                       </td>
                                   </tr>
                               </ItemTemplate>
                               <FooterTemplate>
                                   </tbody> </table>
                               </FooterTemplate>
                           </asp:Repeater>
                       </ContentTemplate>
                   </asp:UpdatePanel>

Can anyone plzzz help me,

Thanks