var machine = new MyStateMachine(
    {
        //state
        "ready": {
            //event name: new state
            "mouse-move": "ready",
            "mouse-down": "dragging"
        },
        "dragging": {
            "mouse-move": "dragging",
            "mouse-up": "ready"
        }
    },
    "ready",
    handleStateChange);