Script to convert numeric percentage into text?

i.e. [FIELD_APR]="4.25" convert to [FIELD_APR_TEXT]="Four and Twenty Five Hundredths"
 
Thank you for any ideas. The government is killing me with lending regulation changes!
 
-Rachel
 
I have this that converts currency into text:
 
aTens = [ "Twenty", "Thirty", "Forty", "Fifty", "Sixty", "Seventy", "Eighty", "Ninety"];
aOnes = [ "Zero", "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine",
"Ten", "Eleven", "Twelve", "Thirteen", "Fourteen", "Fifteen", "Sixteen", "Seventeen", "Eighteen",
"Nineteen" ];
 
function ConvertToHundreds(num)
{
var cNum, nNum;
var cWords = "";
 
num %= 1000;
if (num > 99) {
/* Hundreds. */
cNum = String(num);
nNum = Number(cNum.charAt(0));
cWords += aOnes[nNum] + " Hundred";
num %= 100;
if (num > 0)
cWords += " and "
}

if (num > 19) {
/* Tens. */
cNum = String(num);
nNum = Number(cNum.charAt(0));
cWords += aTens[nNum - 2];
num %= 10;
if (num > 0)
cWords += "-";
}
 
if (num > 0) {
/* Ones and teens. */
nNum = Math.floor(num);
cWords += aOnes[nNum];
}
 
return cWords;
}
 
function ConvertToWords(num)
{
var aUnits = [ "Thousand", "Million", "Billion", "Trillion", "Quadrillion" ];
var cWords = (num >= 1 && num < 2) ? "Dollar and " : "Dollars and ";
var nLeft = Math.floor(num);
for (var i = 0; nLeft > 0; i++) {
if (nLeft % 1000 > 0) {
if (i != 0)
cWords = ConvertToHundreds(nLeft) + " " + aUnits[i - 1] + " " + cWords;
else
cWords = ConvertToHundreds(nLeft) + " " + cWords;
}
nLeft = Math.floor(nLeft / 1000);
}
num = Math.round(num * 100) % 100;
if (num > 0)
cWords += ConvertToHundreds(num) + " Cents";
else
cWords += "Zero Cents";
 
return cWords;
}
//
//
 
//
//Words:Calculate
//
/*********** belongs to: AcroForm:Words:Calculate ***********/
var f = this.getField("FIELD_APR");
 
event.value = ConvertToWords(f.value);
 
this.getField("FIELD_APR_TEXT").value = ConvertToWords(f.value);
//
//