Compute

<html>
<head>
<title> Ejay Manalansan </title>
<SCRIPT language="javascript" type="text/javascript">

function average()
{

a=Number(document.calculator.number1.value);
b=Number(document.calculator.number2.value);
c=Number(document.calculator.number3.value);
d=(a + b + c) / 3
e=d.toFixed(2)
document.calculator.total.value=d;


}
</script>
</head>
<body>

<body background="kanade.jpg">

<FORM name="calculator">
<hl><font size="15"><b><center>Lab Ass:1</b></font></center></hl>
<table align="center" border ="3">
<tr>
<th>Ejay Manalansan</th>
</tr>
<tr>
<th>2nd Semester</td>
</tr>

<tr>
<td><b>PRELIM</b></td>
<td><INPUT type="text" name="number1"></td>
</tr>

<tr>
<td><b>MIDTERM</b></td>
<td><INPUT type="text" name="number2"></td>
</tr>

<tr>
<td><b>FINALS</b></td>
<td><INPUT type="text" name="number3"></td>
</tr>

<td><b>AVERAGE</b></td>
<td><INPUT type="text" name="total" readonly></td>
</tr>

<td align="center"><INPUT type="reset" value="Reset"></td>

<td align="center"><INPUT type="button" value="Compute" onclick="javascript:average();"></td>
</tr>
</body>
</html>