[megaupload]

тогда вопрос

function Bullet() {

    /*Инициализация
     --------------------------------------------*/
    var HTMLElement = document.createElement('div');
    HTMLElement.className = 'bullet';
    document.body.appendChild(HTMLElement);


    /*Свойства
     --------------------------------------------*/
    this.HTMLElement = HTMLElement;
    this.animationFrameId = null;

    this.startTime = new Date;
    this.position = new Point(200, 200);
    this.target = new Point(1300, 500);
    this.speed = 1;


    /*Методы
     --------------------------------------------*/
    this.start = function () {
        this.step();
        this.animationFrameId = requestAnimationFrame(this.start.bind(this), this.HTMLElement);
    };

    this.stop = function () {
        cancelRequestAnimationFrame(this.animationFrameId);
    };

    this.step = function () {

        this.position.x += this.speed;

        this.HTMLElement.style.left = this.position.x + 'px';
        this.HTMLElement.style.top = this.position.y + 'px';
    };


    /* ШТО ЭТО ТАКОЕ И ПОЧЕМУ ОНО НЕ В СЕКЦИИ ИНИЦИАЛИЗАЦИИ????????????? */
    this.start();

}