I have a form with a radio button (and of course other fields).
The form statement:
<form method="POST" action="http://www.rain1.com/new-site/authorize_net.php
" name="st" onSubmit="return validate_pmnt_form();">
The radio button:
Please note: Service packages are non refundable and non transferable. <input type="radio" name="ntr" value="y" style="visibility; visible;"> Click to indicate you have read this statement.
alert("Please click that you understand the non-refundable & non-transferrable statement.");
If you DO NOT click the radio button, it still submits the form.