Get admin level on Goldlink script v3.0

There is a bug in script of links Goldlink v3.0 http://www.goldscripts.com/goldlink.php. You can access to panel with admin privileges. The bug is in variables.php file: function Acceso global $extension; global $tbadmin; global $HTTPCOOKIEVARS; $vadminlogin=$HTTPCOOKIEVARS"vadminlogin";...