}
// server-side selection on peerscope
-$peerscope=new PeerScope($api,$_GET['peerscope']);
+$peerscope=new PeerScope($api,get_array($_GET, 'peerscope'));
$node_filter=array_merge($node_filter,$peerscope->filter());
$title .= ' - ' . $peerscope->label();