browserName = navigator.appName;          
        browserVer = parseInt(navigator.appVersion); 
 if ((browserName == "Netscape" && browserVer >= 3) || (browserVer > 3)) version = "n3";
            else version = "n2";
            
            if (version == "n3") {                 
            Xon = new Image();           
            Xon.src = "images/barmenu/terrorism-on.gif";
            Yon = new Image();           
            Yon.src = "images/barmenu/meters-on.gif";
            Zon = new Image();
            Zon.src = "images/barmenu/ems-on.gif";

            Xoff = new Image();           
            Xoff.src = "images/barmenu/terrorism-off.gif";
            Yoff = new Image();           
            Yoff.src = "images/barmenu/meters-off.gif";
            Zoff = new Image();
            Zoff.src = "images/barmenu/ems-off.gif";
																	
			}

function select(imgName) {
            if (version == "n3") {                 
            document.images['X'].src = Xoff.src;
            document.images['Y'].src = Yoff.src;
            document.images['Z'].src = Zoff.src;
            document.images[imgName].src = eval(imgName + "on.src");
			}
    }

    function deselect(imgName) {
            if (version == "n3") {                 
            document.images[imgName].src = eval(imgName + "off.src");
			}
    }