var cale = new Calendar("idCalendar", {
            SelectDay: new Date().setDate(10),
            onSelectDay: function(o){ o.className = "onSelect"; },
            onToday: function(o){ o.className = "onToday"; },
            onFinish: function(){
                $("idCalendarYear").innerHTML = this.Year;
                $("idCalendarMonth").innerHTML = this.Month;
            }
        });

        $("idCalendarPre").onclick = function(){ cale.PreMonth(); }
        $("idCalendarNext").onclick = function(){ cale.NextMonth(); }