// Create a new Person object with dummy constructor
  var Person = Class.create();
  
  // Copy the following functions into the Person prototype
  Object.extend( Person.prototype, {
  
      // The function called immediately by the Person constructor
      initialize: function( name ) {
          this.name = name;
      },
  
      // A simple function for the Person object
      getName: function() {
          return this.name;
      }
  
  });
  
  // Create a new User object with a dummy constructor
  var User = Class.create();
  
  // The User object inherits all the functions of its parent class
  User.prototype = Object.extend( new Person(), {
  
      // Overwrite the old initialize function with the new one
      initialize: function( name, password ) {
          this.name = name;
          this.password = password;
      },
  
      // and add a new function to the object
      getPassword: function() {
          return this.password;
      }
  
  });