[10] perl -Mwarnings /tmp/testit.pl
"my" variable @perlbooks masks earlier declaration in same scope at /tmp/testit.pl line 50.
Bareword "parent" not allowed while "strict subs" in use at /tmp/testit.pl line 15.
syntax error at /tmp/testit.pl line 34, near ")
        return"
Global symbol "@hrefs" requires explicit package name at /tmp/testit.pl line 34.
Execution of /tmp/testit.pl aborted due to compilation errors.

##</code><code>##

sub get_url {
   my $node  = shift;
   my @hrefs = $node->look_down(_tag => 'a') return unless @hrefs;
   my $url   = $hrefs[0]->attr('href');
   $url =~ s/\s+$//;
   return $url;
}