Powergamers and achievements

(powergamers not working properly yet)
I need help with the "ORDER BY"
````
$znotePlayers = mysql_select_multi('SELECT * FROM `players` `a` JOIN `znote_players` `b` ON `a`.`id` = `b`.`id`  WHERE `a`.`group_id` < 2 ORDER BY `a`.`experience`-`b`.`exphist_lastexp` DESC LIMIT ' . $limit);
````
Currently it doesn't subtract the 'experience' from 'exphist_lastexp'
add this to make it easy to add a onlinetime.php together:

	db.executeQuery("UPDATE `znote_players` `z` INNER JOIN `players_online` `o` ON `z`.`player_id`=`o`.`player_id` SET `z`.`onlinetimetoday`=`z`.`onlinetimetoday`+15, `z`.`onlinetimeall`=`z`.`onlinetimeall`+60 WHERE `z`.`player_id`=`o`.`player_id`;")