<html>
<head>
<title>Promedio</title>
<script language="javascript">
function promedio(){
var pp;
var ep;
var ef;
var prom;
pp= parseInt(form1.txtpp.value);
ep=parseInt(form1.txtep.value);
ef=parseInt(form1.txtef.value);
/* apatir de aqui nose q mas hacer con los radios*/
}
</script>
</head>
<body>
Calcular promedio<br />
<form id="form1" name="form1">
<table width="750" border="0" cellspacing="0" cellpadding="0">
<tr>
<td>PP :
<label>
<input name="txtpp" type="text" id="txtpp" />
</label></td>
</tr>
<tr>
<td>EP :
<label>
<input name="txtep" type="text" id="txtep" />
</label></td>
</tr>
<tr>
<td>EF :
<label>
<input name="txtef" type="text" id="txtef" />
</label></td>
</tr>
<tr>
<td>Peso</td>
</tr>
<tr>
<td><input name="optpeso" type="radio" value=" *** " />
Normal</td>
</tr>
<tr>
<td><input name="optpeso" type="radio" value=" *** " />
(PP+2EP+2EF)/5</td>
</tr>
<tr>
<td><input name="optpeso" type="radio" value=" *** " />
(PP+EP+2EF)/4</td>
</tr>
<tr>
<td><input type="button" name="btncalc" value="Calcular" onclick="promedio();" /></td>
</tr>
<tr>
<td>Promedi :
<input name="txtprom" type="text" id="txtprom" /></td>
</tr>
</table>
Mensaje :
<input name="txtmen" type="text" id="txtmen" />
</form>
</body>
</html>