browserName = navigator.appName;
browserVer = parseInt(navigator.appVersion);
        if (browserName == "Netscape" && browserVer >= 3) version = "n3";
        else version = "n2";
        
        if (version == "n3") {
        but1on = new Image();
        but1on.src = "images/products-on.gif";
        but2on = new Image();
        but2on.src = "images/benefits-on.gif";
        but3on = new Image();
        but3on.src = "images/samples-on.gif";
        but4on = new Image();
        but4on.src = "images/faq-on.gif";
        but5on = new Image();
        but5on.src = "images/order-on.gif";
        but6on = new Image();
        but6on.src = "images/tutorials-on.gif";
		but7on = new Image();
        but7on.src = "images/support-on.gif";
		
		but1off = new Image();
        but1off.src = "images/products.gif";
        but2off = new Image();
        but2off.src = "images/benefits.gif";
        but3off = new Image();
        but3off.src = "images/samples.gif";
        but4off = new Image();
        but4off.src = "images/faq.gif";
        but5off = new Image();
        but5off.src = "images/order.gif";
        but6off = new Image();
        but6off.src = "images/tutorials.gif";
		but7off = new Image();
        but7off.src = "images/support.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;
        }
}