code: function getEventPoint(ev) {
    ev = ev.originalEvent || ev; // support jQuery events
    return (ev.touches && ev.touches[0]) ||
      (ev.changedTouches && ev.changedTouches[0]) ||
      ev;
  }
docs: Normalize the point where the DOM event happened whether it's touch or mouse.
  @returns point event obj with pageX and pageY on it.