jQuery Mobile swipe up and down

HTML

<link rel="stylesheet" href="http://code.jquery.com/mobile/1.3.2/jquery.mobile-1.3.2.min.css">
<script src="http://code.jquery.com/mobile/1.3.2/jquery.mobile-1.3.2.min.js"></script>

JavaScript

(function() {
// initializes touch and scroll events
        var supportTouch = $.support.touch,
                scrollEvent = "touchmove scroll",
                touchStartEvent = supportTouch ? "touchstart" : "mousedown",
                touchStopEvent = supportTouch ? "touchend" : "mouseup",
                touchMoveEvent = supportTouch ? "touchmove" : "mousemove";
 
 // handles swipeup and swipedown
        $.event.special.swipeupdown = {
            setup: function() {
                var thisObject = this;
                var $this = $(thisObject);
 
                $this.bind(touchStartEvent, function(event) {
                    var data = event.originalEvent.touches ?
                            event.originalEvent.touches[ 0 ] :
                            event,
                            start = {
                                time: (new Date).getTime(),
                                coords: [ data.pageX, data.pageY ],
                                origin: $(event.target)
                            },
                            stop;
 
                    function moveHandler(event) {
                        if (!start) {
                            return;
                        }
 
                        var data = event.originalEvent.touches ?
                                event.originalEvent.touches[ 0 ] :
                                event;
                        stop = {
                            time: (new Date).getTime(),
                            coords: [ data.pageX, data.pageY ]
                        };
 
                        // prevent scrolling
                        if (Math.abs(start.coords[1] - stop.coords[1]) > 10) {
                            event.preventDefault();
                        }
                    }
 
                    $this
                            .bind(touchMoveEvent, moveHandler)
                            .one(touchStopEvent, function(event) {
                       ...