<!--
        browserName = navigator.appName;
        browserVer = parseInt(navigator.appVersion);

         if (browserName == "Netscape" && browserVer >= 3) version = "n3";
         else version = "n2";
                 if (browserName == "Microsoft Internet Explorer" && browserVer >= 4) version = "e4";
                 else version = "e3";
                                  
                function ativa_img(imgName) {
                        if (version == "n3") or (version == "e4") 
                                {
                        imgOn = eval(imgName + ".src");
                                                document [imgName].src = imgOn;
                                                
                }
        }

        function inat_img(imgName) {
                        if (version == "n3") or (version == "e4") 
                                {
                        imgOn = eval(imgName + "off.src");
                                                
                                                document [imgName].src = imgOn;
                                                
                }
        }


//-->