function autenticarme() {
    var nick = $(".txtNick").val();
    var pass = $(".txtPass").val();
    $.ajax({
        url: "login.aspx/conectarBD",
        data: "{ nick: '" + nick + "',password: '" + pass + "' }",
        type: "POST",
        dataType: "JSON",
        contentType: "application/json; charset=utf-8",
        success: function (data) {
            alert("Entro");
        }, error: function (xhr, status, error) {
            alert("Error");
        }
    });
}

#region conectarBD
[WebMethod]
public static string conectarBD(string nick,string password)
{
    Conexion conn = new Conexion();
    string respuesta = conn.Autentificar(nick,password);
    return respuesta;


}
#endregion

[WebMethod]
public static object conectarBD(string nick, string password)
{
    try{
        Conexion conn = new Conexion();
        string respuesta = conn.Autentificar(nick,password);

        return new { success = true, data = respuesta };
    }
    catch (Exception e) {
        return new { success = false, data = e.Message };
    }
}