function Timer(delay) {
    this.delay = delay;
    this.isScheduled = false;
    this.timerID = 0;

    this.schedule = function (eventHandler) {
        this.isScheduled = true;
        this.timerID = window.setTimeout(eventHandler, this.delay);
    }

    this.kill = function () {
        if (this.isScheduled)
            window.clearTimeout(this.timerID);
    }
}