function touchHandler(event) {
    event.stopPropagation();
    var touches = event.changedTouches,
        first = touches[0],
        type = "";
    switch (event.type) {
        case "touchstart": type = "mousedown"; break;
        case "touchmove": type = "mousemove"; break;
        case "touchend": type = "mouseup"; break;
        default: return;
    }
    var simulatedEvent = new MouseEvent(type, { "altKey": false, "button": 0, "buttons": 0, "clientX": first.clientX, "clientY": first.clientY, "ctrlKey": false, "metaKey": false, "relatedTarget": first, "screenX": first.screenX, "screenY": first.screenY, "shiftKey": false });

    // var simulatedEvent = document.createEvent("MouseEvent");
    // simulatedEvent.initMouseEvent(type, true, true, window, 1,
    //     first.screenX, first.screenY,
    //     first.clientX, first.clientY, false,
    //     false, false, false, 0/*left*/, null);

    first.target.dispatchEvent(simulatedEvent);
}

function init() {
    document.addEventListener("touchstart", touchHandler, true);
    document.addEventListener("touchmove", touchHandler, true);
    document.addEventListener("touchend", touchHandler, true);
    document.addEventListener("touchcancel", touchHandler, true);
}