Problem Setting Focus on TextBox when ASP.Net AJAX HTML Editor is used

Try

 Name: <asp:TextBox ID="txtName" runat="server"></asp:TextBox>
    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
    <script type = "text/javascript">
        $(function () {
            setTimeout(function () {
                $("[id$=txtName]").focus();
            }, 1000);
        });
    </script>