var nowDate = new Date();
    var today = nowDate.getDate();
    var currentMonth = nowDate.getMonth();
    var currentYear = nowDate.getFullYear();
    var temp = new Date(currentYear, currentMonth , 0);
    var lastDay = temp.getDate();
    monthList.value = currentMonth;
    yearList.value = currentYear;

    var trs=[],tds=[];


    function changeTable(currentYear, currentMonth){
        var d = new Date(currentYear, currentMonth, 1);
            var t = d.getDay() - 1;
            if(t < 0){
                t = 6;
            }
            var a = 0;
            while(d.getMonth() == currentMonth){
                if(trs[a]===undefined)
                    trs[a]=document.createElement('tr');
                var i = 0;
                while(i < 7){
                    if(tds[a*7+i]===undefined)
                        tds[a*7+i]=document.createElement('td');
                    if(a == 0 && i < t || d.getMonth() != currentMonth){
                        tds[a*7+i].innerHTML = '';
                    }else{
                        tds[a*7+i].innerHTML = d.getDate();
                        d.setDate(d.getDate() + 1);
                    }
                    trs[a].appendChild(tds[a*7+i]);
                    i++;
                }
                document.getElementById('t').appendChild(trs[a]);
                a++;
        }

    }