jquery Zebra_Datepicker does not work inside lightbox

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jQuery

Hi, I am new to jquery please help me
i am using two plug in one lightbox plugin for binding controls and zebra_datepicker for binding date to textbox control which is in a div tag. and that div tag i bind with lightbox.

when i click a texbox which is binded with zebra_datepicker in am not getting focus on datepicker and date is not fetched to text box

.aspx code

<input type="button" class="AddButton" id="btnAdd"  />

   <div id="div1" class="popUpAddUser">
       <table id="Table1" width="100%" style="border-spacing: 8px">
           <tr>
               <td>
                   &lt;asp:Label ID="lblExamStartDate" runat="server" Style="float: right" Text="Exam Start Date"&gt;
               </td>
               <td>
                   :
               </td>
               <td>
                   <input type="text" id="txtExamStartDate" class="datepicker" />
               </td>
           </tr>
       </table>
   </div>

jquery code

 $('#txtExamStartDate').Zebra_DatePicker();

$('#btnAdd').click(function () {
       
        $('#divScheduleExam').lightbox_me({
            lightboxSpeed: 100,
            centered: true,
            closeClick: false,
            closeEsc: true
        })
    });

any help will be appreciable