//判斷年份是否是閏年
function isLeapYear(year){
return (year % 4 == 0 && ((year % 100 != 0) || (year % 400 == 0)))?true:false;
}
//判斷是否大月
function oddMonths(month){
var m = new Array(1,0,1,0,1,0,1,1,0,1,0,1);
return (m[month-1] ==1)?true:false;
}