case 37:
                        if (event.ctrlKey || event.metaKey) $.datepicker._adjustDate(event.target, (isRTL ? +1 : -1), 'D');
                        handled = event.ctrlKey || event.metaKey;
                        // -1 day on ctrl or command +left
                        if (event.originalEvent.altKey) $.datepicker._adjustDate(event.target, (event.ctrlKey ?