homeon = new Image();
homeon.src = "images/nav2/home_black.gif";
homeoff = new Image();
homeoff.src = "images/nav2/home.gif";

serviceson = new Image();
serviceson.src = "images/nav2/services_black.gif";
servicesoff = new Image();
servicesoff.src = "images/nav2/services.gif";

galleryon = new Image();
galleryon.src = "images/nav2/gallery_black.gif";
galleryoff = new Image();
galleryoff.src = "images/nav2/gallery.gif";

agingon = new Image();
agingon.src = "images/nav2/aging_black.gif";
agingoff = new Image();
agingoff.src = "images/nav2/aging.gif";

linkson = new Image();
linkson.src = "images/nav2/links_black.gif";
linksoff = new Image();
linksoff.src = "images/nav2/links.gif";

abouton = new Image();
abouton.src = "images/nav2/about_black.gif";
aboutoff = new Image();
aboutoff.src = "images/nav2/about.gif";

contacton = new Image();
contacton.src = "images/nav2/contact_black.gif";
contactoff = new Image();
contactoff.src = "images/nav2/contact.gif";

// On function
function imgAct(imgName) {
    document[imgName].src = eval(imgName + "on.src");
}

// Off function
function imgInact(imgName) {
    document[imgName].src = eval(imgName + "off.src");
}