switch(series) {
    case "959189132":
    case "2572331":
    case "44265108":

    text = "Validado";
    document.getElementById("register").disabled = false;
    break;
    default:
    text = "Número no valido";
    document.getElementById("mySerie").value = "";
    document.getElementById("register").disabled = true;
}
document.getElementById("mensaje").innerHTML = text;