Then, again, you will need to work out what your browser sends if you navigate the website, and, again, replicate what the browser sends from your script. For example, if you want to simulate "open page 1 in one tab", and then "open all linked pages in other tabs, from page 1", the ->back() method of WWW::Mechanize could be of help.

Again, you have not told me why WWW::Mechanize is insufficient. Please read the documentation and use it or tell us why WWW::Mechanize is insusfficient for your needs.