browserName = navigator.appName;
         browserVer = parseInt(navigator.appVersion);
             if (browserName == "Netscape" && browserVer >= 3) version = "n3";
             else version = "n3";         
             if (version == "n3") {
            
             toc1on = new Image(98,17);
             toc1on.src = "../img/wdcan.gif";
             toc1off = new Image(97,17);
             toc1off.src = "../img/wdc12.gif";

    }
     function img_act(imgName) {
             if (version == "n3") {
             imgOn = eval(imgName + "on.src");
             document [imgName].src = imgOn;
             }
     }
     function img_inact(imgName) {
             if (version == "n3") {
             imgOff = eval(imgName + "off.src");
             document [imgName].src = imgOff;
             }
     }