if (document.images) {            // Active Images
            img0on = new Image();
            img0on.src = "images/Overviewhome_over.gif";
            img0off = new Image();
            img0off.src = "images/Overviewhome.gif";
            img1on = new Image();
            img1on.src = "images/Overview_over.gif";
            img1off = new Image();
            img1off.src = "images/Overview.gif";
            img2on = new Image();
            img2on.src = "images/Purpose_over.gif";
            img2off = new Image();
            img2off.src = "images/Purpose.gif";
            img3on = new Image();
            img3on.src = "images/Structure_over.gif";
            img3off = new Image();
            img3off.src = "images/Structure.gif";
            img4on = new Image();
            img4on.src = "images/Research_over.gif";
            img4off = new Image();
            img4off.src = "images/Research.gif";
            img5on = new Image();
            img5on.src = "images/FAQ_over.gif";
            img5off = new Image();
            img5off.src = "images/FAQ.gif";
            img6on = new Image();
            img6on.src = "images/Registry_over.gif";
            img6off = new Image();
            img6off.src = "images/Registry.gif";
            img7on = new Image();
            img7on.src = "images/Order_over.gif";
            img7off = new Image();
            img7off.src = "images/Order.gif";
            img8on = new Image();
            img8on.src = "images/Contact_over.gif";
            img8off = new Image();
            img8off.src = "images/Contact.gif";
            img9on = new Image();
            img9on.src = "images/Home_over.gif";
            img9off = new Image();
            img9off.src = "images/Home.gif";
            }

// Function to 'activate' images.
function imgOn(imgName) {
        if (document.images) {
            document[imgName].src = eval(imgName + "on.src");
        }
}
// Function to 'deactivate' images.
function imgOff(imgName) {
        if (document.images) {
            document[imgName].src = eval(imgName + "off.src");
        }
}