var url_array = new Array();
          var img_array = new Array();
          var descr_array = new Array();
          var type_array = new Array();
          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=aawplus&action=buy", "images/aawplus_140x180.jpg", "Ad-Aware Plus Edition", "Anti-Spyware");
add_product("go.php?prod_id=aawpro&action=buy", "images/aawpro_140x180.jpg", "Ad-Aware Professional Edition", "Anti-Spyware");
add_product("go.php?prod_id=avast_pro&action=buy", "images/avast_pro_140x180.gif", "avast! Professional", "Anti-Virus");
add_product("go.php?prod_id=avgav&action=buy", "images/avgav_140x180.jpg", "AVG Anti-Virus & Anti-Spyware", "Anti-Virus");
add_product("go.php?prod_id=avgavfw&action=buy", "images/avgavfw_140x180.jpg", "AVG Anti-Virus+Firewall", "Anti-Virus");
add_product("go.php?prod_id=avgis&action=buy", "images/avgis_140x180.jpg", "AVG Internet Security", "Internet Security");
add_product("go.php?prod_id=bdis&action=buy", "images/bitdefender_is_140x180.jpg", "BitDefender Internet Security", "Internet Security");
add_product("go.php?prod_id=kav&action=buy", "images/kav_140x180.jpg", "Kaspersky Anti-Virus", "Anti-Virus");
add_product("go.php?prod_id=kis&action=buy", "images/kis_140x180.jpg", "Kaspersky Internet Security", "Internet Security");
add_product("go.php?prod_id=lpfw&action=buy", "images/lavasoft_pfw_140x180.jpg", "Lavasoft Personal Firewall", "Firewall");
add_product("go.php?prod_id=ossp&action=buy", "images/agnitum-ossp-140x180.png", "Outpost Security Suite Pro", "Internet Security");
add_product("go.php?prod_id=spambully&action=buy", "images/spambully-140x180.png", "Spam Bully", "Anti-Spam");
add_product("go.php?prod_id=zapro&action=buy", "images/zapro-140x180.png", "ZoneAlarm Pro", "Firewall");