use strict;
use warnings;
use HTML::TokeParser::Simple;
use Data::Dumper;

my $parser = HTML::TokeParser::Simple->new(\*DATA);
my (@img,@link,@a);

while (my $token = $parser->get_token) {

   if ($token->is_start_tag('img')) {
      push @img, $token->return_attr->{src};

   } elsif ($token->is_start_tag('link')) {
      push @link, $token->return_attr->{href};

   } elsif ($token->is_start_tag('a')) {
      push @a, $token->return_attr->{href};
   }
}

print Dumper \@img,\@link,\@a;

__DATA__
<A href=normal.link2 class="foo" >
<img src="img.link2" alt="foo">
<a class=foo href='normal.link4'>
<img height=20 width=25 src=img.link3 >
<IMG src='img.link4'>
<link href="css.link1">
<a class=foo href="normal.link1">
<img src="img.link1">
<a href="normal.link3">
<a Href='normal.link5'>