var datetime = new Date();
var day;
switch(datetime.getDay())
{
	case 0:
		day = "日";
		break;
	case 1:
		day = "一";
		break;
	case 2:
		day = "二";
		break;
	case 3:
		day = "三";
		break;
	case 4:
		day = "四";
		break;
	case 5:
		day = "五";
		break;
	case 6:
		day = "六";
		break;
}
var datestr = "今天是"+datetime.getFullYear()+"年"+(datetime.getMonth()+1)+"月"+datetime.getDate()+"日星期"+day;
document.write(datestr);