<%init>
use Data::Dumper;
my $url = $r->uri;
$url =~ s/\/mac\//..\//;
my $args_str = '?';
foreach(keys %ARGS){
  $args_str .= '&'.$_.'='.$ARGS{$_} if($_ !~ /^c$|^submit$|^Submit$/);
}

$m->redirect($url.$args_str);
</%init>
