I have problem with the convert button please help
Thanks in advance
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
<script type="text/javascript">
var th = ['',];
var dg = ['zero', 'ichi', 'ni', 'san', 'yon', 'go', 'roku', 'nana', 'hachi', 'kyuu'];
var tn = ['juu', 'juuichi', 'juuni', 'juusan', 'juushi', 'juugo', 'juuruko', 'juushichi', 'juuhachi', 'juuku'];
var tw = ['nijuu', 'sanjuu', 'yonjuu', 'gojuu', 'rokujuu', 'nanajuu', 'hachijuu', 'kyuujuu'];
function update(){
var numString = document.getElementById('number').value;
if (numString == '0') {
document.getElementById('container').innerHTML = 'Zero';
return;
}
if (numString == 0) {
document.getElementById('container').innerHTML = '<h1>Please enter a number:)</h1>';
return;
}
var output = toWords(numString);
//print the output
document.getElementById('container').innerHTML = output;
}
function toWords(s) {
s = s.toString();
s = s.replace(/[\, ]/g, '');
if (s != parseFloat(s)) return '<h1>not a number</h2>';
var x = s.indexOf('.');
if (x == -1) x = s.length;
if (x > 3) return 'too big';
var n = s.split('');
var str = '';
var sk = 0;
for (var i = 0; i < x; i++) {
if ((x - i) % 3 == 2) {
if (n[i] == '1') {
str += tn[Number(n[i + 1])] + ' ';
i++;
sk = 1;
} else if (n[i] != 0) {
str += tw[n[i] - 2] + '';
sk = 1;
}
} else if (n[i] != 0) {
str += dg[n[i]] + ' ';
if ((x - i) % 3 == 0) str += 'hyako ';
sk = 1;
}
if ((x - i) % 3 == 1) {
if (sk) str += th[(x - i - 1) / 3] + ' ';
sk = 0;
}
}
if (x != s.length) {
var y = s.length;
str += 'point ';
for (var i = x + 1; i < y; i++) str += dg[n[i]] + ' ';
}
return str.replace(/\s+/g, ' ');
}
</script>
</head>
<body bgcolor="#FAF8CC"><center>
<h1>integer to word</h1>
<hr width="200"/>
<input type="text"
id="number"
size="70"
/>
<input type="button" onclick="update()">
<input type="text" name="translated text here">
<br/>
<br/>
</center>
</body>
</html>