Refactor position calculation
Refactor position calculation

cssfirefly/jcarousel,mrkiwi/jcarousel,nguyenuit/jcarousel,burakkp/jcarousel,cssfirefly/jcarousel,Orehouse/jcarousel,jsor/jcarousel,npmcomponent/jsor-jcarousel,jsor/jcarousel,stormwild/jcarousel,Hanzig/jcarousel,Hanzig/jcarousel,mrkiwi/jcarousel,stormwild/jcarousel,nguyenuit/jcarousel,Orehouse/jcarousel