Hola Sensorium.
Prueba esto:
Código PHP:
<html>
<head>
<script language="javascript">
function enableGroup(enableCombos){
with (document.frm){
a.disabled = !enableCombos;
b.disabled = !enableCombos;
c.disabled = !enableCombos;
d.disabled = !enableCombos;
e.disabled = !enableCombos;
f.disabled = !enableCombos;
}
}
</script>
</head>
<body>
<form name='frm'>
<input type='radio' name='rad' onclick='enableGroup(true)'>Enable
<input type='radio' name='rad' checked onclick='enableGroup(false)'>Disable
<select name='a' disabled><option>1</option></select>
<select name='b' disabled><option>1</option></select>
<select name='c' disabled><option>1</option></select>
<select name='d' disabled><option>1</option></select>
<select name='e' disabled><option>1</option></select>
<select name='f' disabled><option>1</option></select>
</form>
</body>
</html>
Saludos.