Hi I cant get this simple sample code to work. Any ideas?

<%@ Page Language="C#" %>
<%@ Register Assembly="Coolite.Ext.Web" Namespace="Coolite.Ext.Web" TagPrefix="ext" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">



<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">



<script type="text/javascript">


</script>



<title></title>


<script runat="server">
    protected void Page_Load(object sender, EventArgs e)
    {
        //Sets the culture on the page
        string strCulture = "da-DK";
        Page.Culture = strCulture;
        System.Globalization.CultureInfo ciCulture = new System.Globalization.CultureInfo(strCulture, true);
        ScriptManager1.Locale = ciCulture;
        //--


        string[] strDisabledDates = new string[1];
        strDisabledDates[0] = DateTime.Now.AddDays(1).ToShortDateString();
        dpDatePicker.DisabledDates = strDisabledDates;  
    }


</script>
</head>
<body>
<form id="form1" runat="server">


<ext:ScriptManager ID="ScriptManager1" runat="server">
</ext:ScriptManager>



    <ext:DatePicker runat="server" ID="dpDatePicker"></ext:DatePicker>


</form>
</body>
</html>
Thanks!
/Mikael