Validating RadTextBox

[Christian]

Is it possible to validate RadTextBox with Kendo UI Validation?
My code looks like this:

<script type="text/javascript">
$(document).ready(function () {
            $("#contact").kendoWindow({
                actions: ["Maximize", "Minimize", "Close"],
                title: "Contact...",
                visible: false
            }).data("kendoWindow");
            $("#contact").kendoWindow('open');
            $("#contact").kendoValidator();
</script>
...
<div id="contact">
        <table>
            <tr>
                <td>Name :</td>
                <td>
                    <telerik:RadTextBox ID="tbFullName" runat="server" CssClass="k-textbox" EmptyMessage="Please enter your name"  ClientIDMode="Static"></telerik:RadTextBox></td>
                <td><span class="k-invalid-msg" data-for="tbFullName"></span></td>
            </tr>
        </table>
    </div>

For testing purposes, I tried kendoWindow() so that I can be sure that all links are ok and Kendo Window worked perfekt.
But unfortunately Kendo Validation didn't works for me with RadTextBox. If I use <input> tags intead of RadTextBox
everything works fine.

I hope that someone can help me. Thanks in advance.