browserName = navigator.appName;
browserVer = parseInt(navigator.appVersion);
	if (browserName == "Netscape" && browserVer >= 3) version = "good";
	else if (browserName=="Microsoft Internet Explorer" && browserVer>=3) version="good";
	else version = "old";
        
        if (version == "good") {
        homeon = new Image();
        homeon.src = "graphics/home-on.gif";
        servon = new Image();
        servon.src = "graphics/services-on.gif";
        eventson = new Image();
        eventson.src = "graphics/events-on.gif";
        mailon = new Image();
        mailon.src = "graphics/email-on.gif";
        directon = new Image();
        directon.src = "graphics/direct-on.gif";
        backon = new Image();
        backon.src = "graphics/back-on_II.gif";
        homeoff = new Image();
        homeoff.src = "graphics/home-off.gif";
        servoff = new Image();
        servoff.src = "graphics/services-off.gif";
        eventsoff = new Image();
        eventsoff.src = "graphics/events-off.gif";
        mailoff = new Image();
        mailoff.src = "graphics/email-off.gif";
        directoff = new Image();
        directoff.src = "graphics/direct-off.gif";
        backoff = new Image();
        backoff.src = "graphics/back-off_II.gif";
        }

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

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