hook(type => "targetpage", id => "po", call => \&targetpage);
hook(type => "tweakurlpath", id => "po", call => \&tweakurlpath);
hook(type => "tweakbestlink", id => "po", call => \&tweakbestlink);
hook(type => "targetpage", id => "po", call => \&targetpage);
hook(type => "tweakurlpath", id => "po", call => \&tweakurlpath);
hook(type => "tweakbestlink", id => "po", call => \&tweakbestlink);