funcion mail no me manda el html

[martin0341]

Código PHP:

  <?PHP

include('conexion.php');

conectar();

$sql="SELECT  event_log.*, event_def.subject FROM event_log, event_def WHERE status = 0 AND event_def.event = event_log.event";
$res=mysql_query($sql);


$headers = "MIME-Version: 1.0\r\n
Content-type: text/html; charset=iso-8859-1\r\n
From: Opus<[email protected]>\r\n";


while ($event_log = mysql_fetch_array($res))
{

        if ($event_log[id_from] != $event_log[id_to])
            {
                if (is_null($event_log[id_to]))
                    {
                        $query="SELECT event_mail.* FROM event_mail, event_def WHERE event_mail.event = '".$event_log[event]."' and event_def.profil = 0  AND event_def.event = event_mail.event ";//si no le hago el filtro por event_def.profil = 0 se lo manda a todos los analistas 
                        //echo $query;
                        $result=mysql_query($query);
                            while($row=mysql_fetch_array($result))
                                {
                                    //echo "<br><br>entre<br><br>";
                                    $dameElMail = "SELECT name, email_work FROM members WHERE id =".$row[id_member];
                                    $r = mysql_query($dameElMail);
                                    $losDatos = mysql_fetch_array($r);
                                    /////////////////armo el mail
                                    if ($losDatos[email_work]!="")
                                    {
                                        $to      = $losDatos[email_work];
                                        $subject = $event_log[subject];
                                        $message = $event_log[description];
                                        mail($to, $subject, $message,$headers);
                                    }
                                    /////////////////fin armo mail
                                }
                    }
                    else
                    {
                        $quer="SELECT * FROM event_mail WHERE event = '".$event_log[event]."'  AND id_member = ".$event_log[id_to];
                        
                        $re=mysql_query($quer);
                            while($rowi=mysql_fetch_array($re))
                                {
                                    $dameElMail = "SELECT name,email_work FROM members WHERE id =".$rowi[id_member];
                                    $rr = mysql_query($dameElMail);
                                    $losDato = mysql_fetch_array($rr);
                                    /////////////////armo el mail
                                    if ($losDato[email_work]!="")
                                    {
                                        $to      = $losDato[email_work];
                                        $subject = $event_log[subject];
                                        $message = $event_log[description];
                                      mail($to, $subject, $message,$headers);
                                    }
                                    /////////////////fin armo mail
                                }
                    }


            }

//actualizo el estado de los eventos para que en la proxima consulta
//no elija los eventos que elegio en esta consulta
$y="update event_log set status = 1 WHERE id = ".$event_log[id];
mysql_query($y);
}
desconectar();

?>   

gracias!