Ris

public function rateComment($comment_id, $user_id, $score){
 
        $this->insert('comments_rating', array(
            'comment_id' => $comment_id,
            'user_id'    => $user_id,
            'score'      => $score/2
        ));
 
        $this->filterEqual('id', $comment_id);
 
        $this->increment('comments', 'rating', $score/2);
 
        return true;
 
    }

$('#comments_widget .rating .buttons .rate-up').click(function(){
            return icms.comments.rate(this, 0.5);
        });
 
        $('#comments_widget .rating .buttons .rate-down').click(function(){
            return icms.comments.rate(this, -0.5);
        });