function checkForm(f) {
	if ((validate(f) == true) && (checkItemUsefulness(f) == true)) {
		return true;
	}
	else {
		return false;
	}
}

function checkItemUsefulness (f) {
	usefulChecked=false;
	for (i=0; i< f.ItemUsefulness.length; i++) {
		if (f.ItemUsefulness[i].checked == true) {
			usefulChecked=true;
			break;
		}
	}
	if (usefulChecked == false) {
		alert("Please answer the question, 'I found this item to be (how useful?)'");
		return false;
	}
	else {
		return true;
	}
}