var nMonth = function(){
                                var month = dc.range.current.month == 11 ? 0 : dc.range.current.month + 1,
                                    year = month > 0 ? dc.range.current.year : dc.range.current.year + 1,
                                    day = dc.range.current.mDay > dc.range[month].max ? dc.range[month].max : dc.range.current.mDay;
                                dc.date = new Date(year, month, day);