Simple JavaScript inheritance

Code:

function Person(name) {

        this.name = name;

}

Person.prototype.getName = function() {

        return this.name;

}

function Employee(name, salary) {

        Person.call(this, name);

        this.salary = salary;

}

Employee.prototype.__proto__ = Person.prototype;

Employee.prototype.getSalary = function() {

        return this.salary;

}

function Executive(name, salary, bonus) {

        Employee.call(this, name, salary);

        this.bonus = bonus;

}

Executive.prototype.__proto__ = Employee.prototype;

Executive.prototype.getBonus = function() {

        return this.bonus;

}

var workerbee = new Employee('Workerbee', 100000);

var hotshot = new Executive('Hotshot', 400000, 100000);

hotshot instanceof Executive => true
hotshot instanceof Employee => true
hotshot instanceof Person => true

workerbee instanceof Executive => false
workerbee instanceof Employee => true
workerbee instanceof Person => true

Picture:

Comments?

Other than use of __proto__  (bad! I know).