my $query = get_param('node') || 'default';

my %nodes = (
   default  => \&default,
   news	=> \&news,
   records => \&records, 
   quests => \&quests,
   help => \&help,
   _err	=> \&invalid
);

eval { $nodes{ exists $nodes{$query} ? $query : '_err' }(); };