Our shopping cart uses HTTP_REFERER information which is sent from your browser to our webserver. It tells the shopping cart what page you came from (which the server uses to look up the details of the product you want to add to your shopping cart). Some Internet Security applications such as Norton Internet Security (NIS) block HTTP_REFERER by default during installation. You may unblock HTTP_REFERER blocking by following the appropriate instructions below. If you are using a security application not listed below, please consult its documentation for instructions for unblocking HTTP_REFERER.
Norton Personal Firewall
