<script src="../Scripts/jquery-1.4.1.js" type="text/javascript"></script>
    <script src="../Scripts/jquery.autocomplete.js" type="text/javascript"></script>
    <script src="../Scripts/localdata.js" type="text/javascript"></script>

    <script type="text/javascript">
        $().ready(function () {
 
            $('#<%=txtEmail.ClientID%>').autocomplete(emailExtensions, {
                multiple: true,
                mustMatch: true,
                autoFill: true
            });
        });







 </script> 
               <gaia:TextBox ID="txtEmail" runat="server" Columns="50" Height="100px" MaxLength="300"
                    TextMode="MultiLine" ValidationGroup="entry" Width="900px" 
                    Font-Names="Verdana"></gaia:TextBox>

                <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="txtEmail"
                    Display="Dynamic" ErrorMessage="RequiredFieldValidator" Font-Names="Verdana"

                    Font-Size="8pt" ValidationGroup="entry" SetFocusOnError="True">*-Required</asp:RequiredFieldValidator>
 but the value is null. What am I doing wrong?