get "section==!$section range^=0,20", "adressen";
while( get_next("adressen") )
{
 

}

my $oldrange=$_range-$_range_length;

out "<< <a href=\"$_link§ion=$section&range=$oldrange,$_range_length\">Zurück</a> " if $oldrange>=0;
out "<a href=\"$_link§ion=$section&range=$newrange,$_range_length\">Weiter</a> >>" if $newrange<$_amount_query;