Thanks, fizbin, for your reply.

My intentions are not malicious here. There are no designs to hijack the browser or web experience. Although, now I see, after considering your response, that there would be security issues with this type of application.

Here is the code snippet from one of my “experiments” in parsing with the HTML::TreeBuilder module.

#!perl -w

use HTML::TreeBuilder;
use diagnostics;
use strict;

my $root = HTML::TreeBuilder->new;
$root->parse_file('sample_document.htm') || die $!;

my @paras = $root->find_by_tag_name('p'); 

foreach my $h (@paras) {
    
    foreach my $item_r ($h->content_refs_list) {
        next if ref $$item_r;
        
        ### proprietary JavaScript/HMTL inserted with substitution
    }
    
} # end foreach

print $root->as_HTML;
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