$(document).ready(function(){
	$(":button").click(function(){
		if (!radioSelected()) {
			alert('Please select an option for each question.');
		} else {
			$(this).parent("form").trigger('submit');
		}
	});
});

function radioSelected() {
	var valid = true;
	$(":radio").each(function(){
		if ($(":radio[name='" + $(this).attr('name') + "']:checked").size() < 1) {			
			valid = false;;
		}
	});
	return valid;
}