browserName = navigator.appName;
browserVer = parseInt(navigator.appVersion);

if ((browserName == "Netscape" && browserVer >= 3) ||
    (navigator.appVersion.indexOf("MSIE") > 0 && browserVer >= 4)) {
    version = "anim";

    products = new Image();
    products.src = "tabProductsOn.gif";
    productsoff = new Image();
    productsoff.src = "tabProductsOff.gif";

    charity = new Image();
    charity.src = "tabAirForCharityOn.gif";
    charityoff = new Image();
    charityoff.src = "tabAirForCharityOff.gif";

    services = new Image();
    services.src = "tabServicesOn.gif";
    servicesoff = new Image();
    servicesoff.src = "tabServicesOff.gif";

    contactus = new Image();
    contactus.src = "tabContactUsOn.gif";
    contactusoff = new Image();
    contactusoff.src = "tabContactUsOff.gif";

    aboutus = new Image();
    aboutus.src = "tabAboutUsOn.gif";
    aboutusoff = new Image();
    aboutusoff.src = "tabAboutUsOff.gif";
}

function act(Img) {
    if (version == "anim") {
        document [Img].src = eval(Img + ".src");
    }
}

function inact(Img) {
    if (version == "anim") {
        document [Img].src = eval(Img + "off.src");
    }
}