//init test object /create namespace
var test = window.test = {
    display : {},
    utils : {}
};


test.display = new function display(){  // create a singleton of the display object
    var utils = test.utils;             // create an alias
    this.show = function(){
      return utils.sayHello();          // but the alias doesn't work, utils is an empty object
                                        // test.utils.sayHello() works perfectly
    };
};

test.utils = new function utils() {    // create a singleton of the utils object
    this.sayHello = function(){
      alert('hello');
    };
};

test.display.show();