if (!o.axis || o.axis != 'x') {
                    if ((i.overflowOffset.top + i.scrollParent[0].offsetHeight) - event.pageY < o.scrollSensitivity)
                        i.scrollParent[0].scrollTop = scrolled = i.scrollParent[0].scrollTop + o.scrollSpeed;
                    else if (event.pageY - i.overflowOffset.top < o.scrollSensitivity)
                        i.scrollParent[0].scrollTop = scrolled = i.scrollParent[0].scrollTop - o.scrollSpeed;