function checkForm() {
	var pollValue=0;
	var pollTo=document.getElementById('pollForm').multiple.length;
	for (var i=0;i<pollTo;i++){
		if(document.getElementById('pollForm').multiple[i].checked)pollValue+=1;
	}
	if(pollValue==0){
		alert('You must choose an answer to continue.');
		return false;
	}
	document.getElementById('pollForm').submit();
	return true;
}