if ( guarantor_id ) {
fieldset.find('.new_guarantor_id').first().val( guarantor_id );
fieldset.find('.new_guarantor_id_text').first().text( borrower.cardnumber );
+ fieldset.find('.new_guarantor_link').first().attr("href", "/cgi-bin/koha/members/moremember.pl?borrowernumber=" + guarantor_id );
} else {
fieldset.find('.guarantor_id').first().hide();
}