function validate_form () {
	var obj_form = document.consumer;

	for ( var i = 0; i < obj_form.q.length; i ++ ) {
		if ( obj_form.q [ i ].checked ) {
			i = -1;
			break;
		}
	}
	if ( i != -1 ) {
		alert ( "You forgot to answer the question." );
		return false;
	}
	
	return true;
}