Javascript code in Wordpress site for adding page to browser homepage

We have a Wordpress site and we wish to add a function - popup window that offers the visitor the option to change their browser homepage (startpage) to our site's homepage using javascript and cookies to store their response Idea was taken from other website but unable to reproduce at our site. Project proposal is either to modify existing code to suit our needs and work on a Wordpress site or write new Javascript code with similar function. Access to test website will be given for testing and verification purposes Javascript is as follows: <!-- Start Set as first page --> <script language="javascript"> $(document).ready(function () { if ($.cookie('setashomepage') != '1') { $('#wrapper').prepend('<div class="setashomepage-wrapper">Ορίστε τo [login to view URL] ως αρχική σας σελίδα<a href="#" onclick="try { document.body.style.behavior=\'url(#default#homepage)\'; [login to view URL](\'[login to view URL]\'); } catch(err) {}; $.cookie(\'setashomepage\', \'1\', { expires: 180 }); $(\'#wrapper .setashomepage-wrapper\').hide();">Ναι</a><a href="#" onclick="$.cookie(\'setashomepage\', \'1\', { expires: 180 }); $(\'#wrapper .setashomepage-wrapper\').hide();">Οχι, ευχαριστώ</a></div>'); } }); </script> <!-- End Set as first page -->