小写金额带出大写金额

function Arabia_to_Chinese(payMoney)
{
msg="";
var j=0;
      for(i=payMoney.length-1;i>=0;i--)
       {
    payMoney = payMoney.replace(",","")//替换tomoney()中的“,”
    payMoney = payMoney.replace(" ","")//替换tomoney()中的空格
   }
   payMoney = payMoney.replace("￥","")//替换掉可能出现的￥字符
  
    part = String(payMoney).split(".");
      var newchar = "";
   //小数点前进行转化
  for(i=part[0].length-1;i>=0;i--)
  {
   if(part[0].length > 10)
   {
   alert("位数过大，无法计算");return "";
   }
    tmpnewchar = ""
    perchar = part[0].charAt(i);
    switch(perchar){
     case "0": tmpnewchar="零" + tmpnewchar ;break;
     case "1": tmpnewchar="壹" + tmpnewchar ;break;
     case "2": tmpnewchar="贰" + tmpnewchar ;break;
     case "3": tmpnewchar="叁" + tmpnewchar ;break;
     case "4": tmpnewchar="肆" + tmpnewchar ;break;
     case "5": tmpnewchar="伍" + tmpnewchar ;break;
     case "6": tmpnewchar="陆" + tmpnewchar ;break;
     case "7": tmpnewchar="柒" + tmpnewchar ;break;
     case "8": tmpnewchar="捌" + tmpnewchar ;break;
     case "9": tmpnewchar="玖" + tmpnewchar ;break;
         }    
switch(part[0].length-i-1)
{
     case 0: tmpnewchar = tmpnewchar +"元" ;break;
case 1: if(perchar!=0)tmpnewchar= tmpnewchar +"拾" ;break;
case 2: if(perchar!=0)tmpnewchar= tmpnewchar +"佰" ;break;
case 3: if(perchar!=0)tmpnewchar= tmpnewchar +"仟" ;break;   
case 4: tmpnewchar= tmpnewchar +"万" ;break;
case 5: if(perchar!=0)tmpnewchar= tmpnewchar +"拾" ;break;
case 6: if(perchar!=0)tmpnewchar= tmpnewchar +"佰" ;break;
case 7: if(perchar!=0)tmpnewchar= tmpnewchar +"仟" ;break;
case 8: tmpnewchar= tmpnewchar +"亿" ;break;
case 9: tmpnewchar= tmpnewchar +"拾" ;break;
}
         newchar = tmpnewchar + newchar;
       }
        //小数点之后进行转化
        if(payMoney.indexOf(".")!=-1)
        {
         if(part[1].length > 2)
         {
        part[1] = part[1].substr(0,2)
          }
         for(i=0;i<part[1].length;i++)
         {
        tmpnewchar = ""
        perchar = part[1].charAt(i)
        switch(perchar)
        {
        case "0": tmpnewchar="零" + tmpnewchar ;break;
        case "1": tmpnewchar="壹" + tmpnewchar ;break;
        case "2": tmpnewchar="贰" + tmpnewchar ;break;
        case "3": tmpnewchar="叁" + tmpnewchar ;break;
        case "4": tmpnewchar="肆" + tmpnewchar ;break;
        case "5": tmpnewchar="伍" + tmpnewchar ;break;
        case "6": tmpnewchar="陆" + tmpnewchar ;break;
        case "7": tmpnewchar="柒" + tmpnewchar ;break;
        case "8": tmpnewchar="捌" + tmpnewchar ;break;
        case "9": tmpnewchar="玖" + tmpnewchar ;break;
         }
     if(i==0)tmpnewchar =tmpnewchar + "角";
     if(i==1)tmpnewchar = tmpnewchar + "分";
     newchar = newchar + tmpnewchar;
         }
        }
        //替换所有无用汉字
        while(newchar.search("零零") != -1)
        newchar = newchar.replace("零零", "零");
        newchar = newchar.replace("零亿", "亿");
        newchar = newchar.replace("亿万", "亿");
        newchar = newchar.replace("零万", "万");   
        newchar = newchar.replace("零元", "元");
        newchar = newchar.replace("零角", "");
        newchar = newchar.replace("零分", "");
        if (newchar.charAt(newchar.length-1) == "元" || newchar.charAt(newchar.length-1) == "角")
         newchar = newchar+"整" ;
        document.getElementById("formEntity.TOTALACOUNT").value=newchar;
  }


调用：
<ww:textfield name="formEntity.payMoney" onkeyup="Arabia_to_Chinese(formEntity_payMoney.value);/>