DragMove part of big function

/* ------------- Drag for Mouse and Mobile devices ------------- */
var useMobileDrag = false;
var isiPad = navigator.userAgent.match(/iPad/i) != null;
var isiPhone = navigator.userAgent.match(/iPhone/i) != null;
var isiPod = navigator.userAgent.match(/iPod/i) != null;
if (isiPad || isiPhone || isiPod) useMobileDrag = true;

/**/
var isDragging = false;
var OnDrag = false;
var originalX;
var currentX;
var dragLengthX;
function dragStart(event) {
        OnDrag = true;
        dragLengthX = 0;
        isDragging = true;
        originalX = (useMobileDrag ? event.targetTouches[0].pageX : event.pageX);
        return false
};

function dragMove(event) {
    if (OnDrag){
        currentX = (useMobileDrag ? event.targetTouches[0].pageX : event.pageX);
        dragLengthX =  currentX - originalX;
        if (Math.abs(dragLengthX)<2) {
               return false
        }
        else{
            box.css({
                '-webkit-transition-timing-function': settings.easingCss,
                '-webkit-transition-duration': 0 + 'ms',
                '-webkit-transform': 'translate3d(' + dragLengthX + 'px, 0px, 0px)',
                'transition-timing-function': settings.easingCss,
                'transition-duration': 0 + 'ms',
                'transform': 'translate3d(' + dragLengthX + 'px, 0px, 0px)'
            });
        }
    }
    return false
};
function dragCancel(){console.log("canseling swipe")}
function dragEnd(){
    OnDrag = false;
    wrapperHalfWidth = box.parent().width() * settings.animPartofScrennToSlide
    if (Math.abs(dragLengthX) > wrapperHalfWidth ){
        this.removeEventListener((useMobileDrag ? "touchstart" : "mousedown"), dragStart, false);
        this.removeEventListener((useMobileDrag ? "touchmove" : "mousemove"), dragMove, false);
        this.removeEventListener((useMobileDrag ? "touchend" : "mouseup"), dragEnd, false);
        this.removeEventListener("touchcancel", dragCancel, false);

        var Direction = dragLengthX > 0;
        settings.prevNextClickCallback(outerSlCounter, Direction ? FORWARD : BACK);

        setTimeout(function(){
            this.addEventListener((useMobileDrag ? "touchstart" : "mousedown"), dragStart, false);
            this.addEventListener((useMobileDrag ? "touchmove" : "mousemove"), dragMove, false);
            this.addEventListener((useMobileDrag ? "touchend" : "mouseup"), dragEnd, false);
            this.addEventListener("touchcancel", dragCancel, false);
        }, 500);
        return SlideTo(outerSlCounter + (Direction ? -1 : 1));
    }
    else{
        dragLengthX = 0;
        box.css({
            '-webkit-transition-timing-function': settings.easingCss,
            '-webkit-transition-duration': settings.animDragTime + 'ms',
            '-webkit-transform': 'translate3d(' + dragLengthX + 'px, 0px, 0px)',
            'transition-timing-function': settings.easingCss,
            'transition-duration': settings.animDragTime + 'ms',
            'transform': 'translate3d(' + dragLengthX + 'px, 0px, 0px)'
        });
    }
    isDragging = false;
    originalX = 0;
};


this.addEventListener((useMobileDrag ? "touchstart" : "mousedown"), dragStart, false);
this.addEventListener((useMobileDrag ? "touchmove" : "mousemove"), dragMove, false);
this.addEventListener((useMobileDrag ? "touchend" : "mouseup"), dragEnd, false);
this.addEventListener("touchcancel", dragCancel, false);