js 写日期

<SCRIPT language="JavaScript" type="text/JavaScript">
	today = new Date();
	var day=""
	var date1=""
	if(today.getDay()==0) day = "星期日"
	else if(today.getDay()==1) day = "星期一"
	else if(today.getDay()==2) day = "星期二"
	else if(today.getDay()==3) day = "星期三"
	else if(today.getDay()==4) day = "星期四"
	else if(today.getDay()==5) day = "星期五"
	else if(today.getDay()==6) day = "星期六";
	if (today.getYear()>=2000)
	date1 = (today.getYear()) + "年" + (today.getMonth() + 1 ) + "月" + today.getDate() + "日 ";
	else
	date1 = (1900 + today.getYear()) + "年" + (today.getMonth() + 1 ) + "月" + today.getDate() + "日 ";
	document.writeln(date1+day)
	</SCRIPT>