#my changes

eval { require TWiki::Contrib::MailerContrib::WebNotify };
($web, $topics) = TWiki::Func::normalizeWebTopicName($web, $topics);

my $wn = new TWiki::Contrib::MailerContrib::WebNotify( $TWiki::Plugins::SESSION, $web, $TWiki::cfg{NotifyTopicName} );

my $subscr = $wn->getSubscriber($who);

if ( $subscr->isSubscribedTo() )
{
	$form = CGI::a({href => $url},
                     "Abo auflösen");
}
else
{
 	  $form = CGI::a({href => $url},
                   "Abonieren");            	
}