Perhaps you wanted something like this:
<html>
<head>
<script type="text/javascript">
function check()
{
var o = document.getElementById('addyes');
var t = document.getElementById('addno');
if ( (o.checked == false ) && (t.checked == false ) )
{
var ask = confirm("Would you like to add drivers?");
//if user clicked ok
if(ask)
{
// do something
document.getElementById('additional').focus();
return false;
}
else
{
alert("Ok. Suit yourself.");
}
}
return true;
}
</script>
</head>
<body>
<p>Answer Me:</p>
<form id="carinsurance">
<input type="radio" name="browser" id="addyes" value="addyes">add YES
<input type="radio" name="browser" id="addno" value="addno">add NO
Additional: <input type="text" id="additional" size="20" />
<input type="button" onClick="check()" value="GO" />
</form>
</body>
</html>