public function Updates($uid)
{
$query = mysql_query( "SELECT M.msg_id, M.uid_fk, M.message, M.created, username FROM
messages
INNER JOIN messages M ON (M.uid_fk='$uid' )
INNER JOIN users U ON (M.uid_fk=U.uid )
WHERE
M.uid_fk=U.uid AND M.uid_fk='$uid' OR M.uid_fk IN (SELECT user_1 FROM relationship AS r WHERE r.user_2 = '$uid' AND r.amico = 'S') OR M.uid_fk IN (SELECT user_2 FROM relationship AS r WHERE r.user_1 = '$uid' AND r.amico = 'S') order by M.msg_id desc") or die(mysql_error());
while($row=mysql_fetch_array($query))
$data[]=$row;
return $data;
}