if ( !o.axis || o.axis !== "y" ) {
                if ( ( i.overflowOffset.left + scrollParent.offsetWidth ) - event.pageX < o.scrollSensitivity ) {
                    scrollParent.scrollLeft = scrolled = scrollParent.scrollLeft + o.scrollSpeed;
                } else if ( event.pageX - i.overflowOffset.left < o.scrollSensitivity ) {
                    scrollParent.scrollLeft = scrolled = scrollParent.scrollLeft - o.scrollSpeed;