全中文日期显示

<script language="javascript">
function number(index1){
var numberstring="一二三四五六七八九十";
  if(index1 ==0) {document.write("十")}
  if(index1 < 10){
    document.write(numberstring.substring(0+(index1-1),index1))}
  else if(index1 < 20 ){
    document.write("十"+numberstring.substring(0+(index1-11),(index1-10)))}
  else if(index1 < 30 ){
    document.write("二十"+numberstring.substring(0+(index1-21),(index1-20)))}
  else{
    document.write("三十"+numberstring.substring(0+(index1-31),(index1-30)))}
  }

var today1 = new Date()
var month = today1.getMonth()+1
var date = today1.getDate()
var day = today1.getDay()

document.write("公元二零零零年")
number(month)
document.write("月")
number(date)
document.write("日")
</script>