passing values jquery.ajax

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jQuery

MVC2

Dear All,

I'm novice to MVC2 and jquery, trying to use jquery.ajax to pass values in Model.
But I'm getting an error " [object xmlHttpRequest] 403 "

Here is my jquery code

var nameVal = $("#txtName").val();
        var ageVal = $("#txtAge").val();
        var phoneVal = $("#txtPhone").val();
        alert(nameVal + " " + ageVal + " " + phoneVal + " ");
        $.ajax({
            type: "POST",
            url: "/Models/OrderClass.cs/Insert",
            data: "{name:'" + nameVal + "',age:'" + ageVal + "',phone:'" + phoneVal + "'}",
            contentType: "application/json",
            dataType: "json",
            success: function(data) {
                alert(data.d);
            },
            error: function(xmlHttpRequest, textStatus, errorThrown) {
                if (xmlHttpRequest.readyState == 0 || xmlHttpRequest.status == 0) {
                    alert(xmlHttpRequest + " " + xmlHttpRequest.status);
                } else {
                alert("ELSE :-) "+xmlHttpRequest + " " + xmlHttpRequest.status);
                }
            }
        });

here is model code

[System.Web.Services.WebMethod]
        [HttpPost]
        public static int Insert(string name,string age, string phone)
        {
            int retVal = 0;
            if (!string.IsNullOrEmpty(name) && !string.IsNullOrEmpty(age) && !string.IsNullOrEmpty(phone))
            {
                try
                {
                    using(MySqlConnection con = new MySqlConnection(ConfigurationManager.AppSettings["mvcIceCream"]))
                    {
                        MySqlCommand cmd = new MySqlCommand();
                        cmd.Connection = con;
                        cmd.CommandText = "INSERT INTO student(Name,Age,Phone) VALUES('" + name + "','" + age + "','" + phone + "')";
                        cmd.CommandType = System.Data.CommandType.Text;
                        con.Open();
                        cmd.ExecuteNonQuery();
                        con.Close();
                        retVal = 1;
                    }
                }
                catch (Exception ex) { }
            }
            return retVal;
        }

Please guide me.
Thanks