<form name="formularz" id="formularz" method="post" action="pytania_6_10.php" onsubmit="validate(); return false;">
<script type="text/javascript"> function checkRadio(inputName) { var obj = document.formularz[inputName]; var len = obj.length; for(var i=0; i<len; i++) { if(obj[i].checked) return true; } alert('Uzupełnij pola'); return false; } function validate(form) { var noerror = true; if(!checkRadio('pyt1')) { noerror = false; } if(noerror) { document.formularz.submit(); } } </script>