$query = $_SGLOBAL['db']->query('SELECT * FROM '.tname('spaceitems').' WHERE itemid=/''.$itemid.'/' AND allowreply=/'1/''); 

$type_query = $_SGLOBAL['db']->query('SELECT type FROM '.tname('channels').' WHERE nameid=/''.$type.'/'');  
$type_channel = $_SGLOBAL['db']->fetch_array($type_query);  
$table_name = $type_channel['type'] == 'model'? $type.'items': 'spaceitems';  
$query = $_SGLOBAL['db']->query('SELECT * FROM '.tname($table_name).' WHERE itemid=/''.$itemid.'/' AND allowreply=/'1/'');