var url_array = new Array();
          var img_array = new Array();
          var descr_array = new Array();
          var type_array = new Array();
          var img_type = 'horiz';
          var num_products = 0;
         
          function add_product(url, img, descr, type_descr)
          // fill global arrays with new product data
          {
            url_array[num_products] = url;
            img_array[num_products] = img;
            descr_array[num_products] = descr;
            type_array[num_products] = type_descr;
            num_products++;
          }
        
        add_product("go.php?prod_id=avast_is&action=buy", "images/avast-is-2014-info-468x60.gif", "avast! Internet Security", "Internet Security");
add_product("go.php?prod_id=avast_pro&action=buy", "images/avast-av-pro-7-468x60.gif", "avast! Professional", "Anti-Virus");
add_product("go.php?prod_id=bdis&action=buy", "images/bitdefender-is-2013-468x60.gif", "Bitdefender Internet Security", "Internet Security");
add_product("go.php?prod_id=kav&action=buy", "images/kaspersky-av-2012-468x60.gif", "Kaspersky Anti-Virus", "Anti-Virus");
add_product("go.php?prod_id=kis&action=buy", "images/kaspersky-is-2012-468x60.gif", "Kaspersky Internet Security", "Internet Security");
add_product("go.php?prod_id=mailwasherpro&action=buy", "images/mailwasherpro-468x60.jpg", "MailWasher PRO", "Anti-Spam");
add_product("go.php?prod_id=outpost-fw-pro&action=buy", "images/outpost-banner-468x60.jpg", "Outpost Firewall Pro", "Firewall");
add_product("go.php?prod_id=pcpandora&action=buy", "images/pc-pandora-banner-468x60.gif", "PC Pandora", "Parental Control");
add_product("go.php?prod_id=spambully&action=buy", "images/spambully_banner3.gif", "Spam Bully", "Anti-Spam");
add_product("go.php?prod_id=spamfighterpro&action=buy", "images/spamfighter-pro-7-468x60.gif", "SPAMfighter PRO", "Anti-Spam");