For make a pop with the help of Java scripts



cs----------------------
         string dd = pnl_edit.Style.Value.ToString();
            string s = " $('.modalPopupTest').show();";
            ScriptManager.RegisterStartupScript(this, typeof(Page), "fdfd", s, true);

aspx---------------

 <script type="text/javascript">
      function Test() {
          $(".modalPopupTest").show(2000);
          return false;
      }
  </script>




    <style type="text/css">
       .modalPopupTest
       {
           left: 469.5px;
           position: fixed;
           top: 49.5px;
           z-index: 100001;
          
            filter: alpha(opacity=90);
            opacity: 5.5;
            border-collapse:separate;
             background-color: #d7e4f2;
            border-width: 2px;
           /* border-style:inset; */
            border-color: black;
            padding-top: 20px;
            padding-left: 10px;
            border-spacing:5px;             
            caption-side:bottom;
            width: 300px;
            height: 200px;
          
           }
</style>




<asp:Panel ID="pnl_edit" style="display:none;" runat="server" CssClass="modalPopupTest" align="center">
    <center>
    <table>
    <tr>
    <td>
    <asp:Label ID="lbl_nedit" runat="server" Text="Name"></asp:Label>
    <asp:TextBox ID="txt_nmedit"  runat="server"></asp:TextBox>
    </td>
    <td>
        <asp:Label ID="lbl_c" runat="server" Text="City"></asp:Label>
    <asp:TextBox ID="txt_citedit" runat="server"></asp:TextBox>
    </td>
    <td>
        <asp:Label ID="lbl_degedit" runat="server" Text="Desigation"></asp:Label>
    <asp:TextBox ID="txt_degedit" runat="server"></asp:TextBox>
    </td>
    <td>
        <asp:Label ID="lbl_editaddress" runat="server" Text="Address"></asp:Label>
    <asp:TextBox ID="txt_Editaddres" runat="server"></asp:TextBox>
    </td>
    <td>
        <asp:Label ID="lbl_depedit" runat="server" Text="Department"></asp:Label>
    <asp:TextBox ID="txt_deprtedit" runat="server"></asp:TextBox>
    </td>
    </tr>
    </table>
    </center>
    <br />
    <asp:Button ID="ok_edit" Text="Update" runat="server" onclick="ok_edit_Click"/>
    <asp:Button ID="cancel_edit" Text="Cancel" runat="server" OnClick="cancel_click" />
    </asp:Panel>