Fetching URL

[Shaveta_Chawla]

I am trying to fetch a url from a site. i have used form method to fetch URL and successfully fetched first page URL.i have just submitted basic URL where search page is available. The code used is::

my @forms = HTML::Form->parse($res);
@forms = grep{$_->attr('name') eq 'adv_search_form'} @forms;
my $form = shift @forms;

 my $req = $form->make_request;

the URL generates dynamic value. when i am trying to fetch second page URL, means next page request the code used is::

my $referer = $res->request->uri;
my $uri = $res->request->uri;
my $headers = $res->request->headers;
    my %link_tags = (
        a      => 'href',
    );
 my $parser = HTML::TokeParser->new(\$res->decoded_content());
while ( my $token = $parser->get_tag( keys %link_tags ) ) {
            my $attrs = $token->[1];
         my $text = $parser->get_trimmed_text("/a");
         my $url = $attrs->{$link_tags{'a'}};
         if($text eq 'Next page') {
             $url2 = "abc.com" . $url;    
         }
$headers->header(referer => $referer);
my $req = HTTP::Request->new('GET', $url2, $headers);
return $req;

i have got the exact URL but that URL is not working. Please help me out...