Menu principale:
<script>
$(document).ready(function() {
var radio = $("#imObjectForm_1_5_0"); // id campo scelta singola
radio.hide();
$('select').change(function() {
var sum = 0;
$('select :selected').each(function() {
sum += Number($(this).val());
radio.removeClass('mandatory');
});
radio.next().html('La somma deve essere 100 (' + sum + ')');
if (sum != 100)
radio.addClass('mandatory');
});
});
</script>