ASP.NET MVC Button Click question

[Casbah]

Dead friends!

How can I redirect user to specific action by clicking the <ext:Button/>?

I make this:

<script>
 function logout() {
  window.open('<%=Url.Action("Logout", "Interface")%>', '_top');
 }
</script>

<ext:Button Icon="UserGo" Text="Exit" runat="server">
<Listeners>
 <Click Fn="logout" />
</Listeners>
</ext:Button>

But for me it looks so complex. Is there a simply way to do this, may be with AjaxEvent etc.???