Example:    [run]    [run browser test]

// Native JavaScript style class definition
function Car( color, type) {
  this.color = color;
  this.type = type;
  this.drive = function() { alert( 'Car::drive() called!'); };
  this.init = function() { alert( 'Car::init() called!'); };
  alert( 'Car::constructor() called!');
};

// AJAX.OOP-style class definition with inheritance
var Suzuki = Ajax.Class( Car, //<- inherit class Car
{ // write definition of a child class:
  constructor : function( color) {
    this.$super.constructor( color, 'sedan'); //<- call parent constructor
    alert( 'Suzuki::constructor() called!');
    this.$super.init(); //<- call another parent method
  },
  drive : function() { //<- override parent method
    this.$super.drive(); //<- call parent method:
    alert( 'Suzuki::drive() called!');
  },
  turn : function( where) {
    alert( this.color + ' ' + this.type + ' suzuki has turned ' + where);
  }
});

// instantiate object:
var vehicle = new Suzuki( 'Red');
vehicle.drive(); vehicle.turn( 'left');

// check object hierarchy:
alert( 'vehicle is instance of Car: ' + (vehicle instanceof Car));
alert( 'vehicle is instance of Suzuki: ' + (vehicle instanceof Suzuki));