code: function _fixUIEvent(event) { // for issue 1168
  	if (event.pageX === undefined) {
  		event.pageX = event.originalEvent.pageX;
  		event.pageY = event.originalEvent.pageY;
  	}
  }
docs: this fix was only necessary for jQuery UI 1.8.16 (and jQuery 1.7 or 1.7.1) upgrading to jQuery UI 1.8.17 (and using either jQuery 1.7 or 1.7.1) fixed the problem but keep this in here for 1.8.16 users and maybe remove it down the line