if (document.images) {            // Active Images
            img1on = new Image();
            img1on.src = "images/menu_home2_on.gif";
            img1off = new Image();
            img1off.src = "images/menu_home2.gif";
            img3on = new Image();
            img3on.src = "images/menu_programs2_on.gif";
            img3off = new Image();
            img3off.src = "images/menu_programs2.gif";
            img4on = new Image();
            img4on.src = "images/menu_new2_on.gif";
            img4off = new Image();
            img4off.src = "images/menu_new2.gif";
            img5on = new Image();
            img5on.src = "images/menu_volunteers2_on.gif";
            img5off = new Image();
            img5off.src = "images/menu_volunteers2.gif";
            img7on = new Image();
            img7on.src = "images/menu_donations2_on.gif";
            img7off = new Image();
            img7off.src = "images/menu_donations2.gif";
            img8on = new Image();
            img8on.src = "images/menu_resources2_on.gif";
            img8off = new Image();
            img8off.src = "images/menu_resources2.gif";
            img9on = new Image();
            img9on.src = "images/menu_publications2_on.gif";
            img9off = new Image();
            img9off.src = "images/menu_publications2.gif";
            img10on = new Image();
            img10on.src = "images/menu_contact2_on.gif";
            img10off = new Image();
            img10off.src = "images/menu_contact2.gif";
            img11on = new Image();
            img11on.src = "images/menu_newsletters2_on.gif";
            img11off = new Image();
            img11off.src = "images/menu_newsletters2.gif";
            img12on = new Image();
            img12on.src = "images/menu_jobs2_on.gif";
            img12off = new Image();
            img12off.src = "images/menu_jobs2.gif";
            img13on = new Image();
            img13on.src = "images/menu_events2_on.gif";
            img13off = new Image();
            img13off.src = "images/menu_events2.gif";
            img14on = new Image();
            img14on.src = "images/menu_media2_on.gif";
            img14off = new Image();
            img14off.src = "images/menu_media2.gif";
            img15on = new Image();
            img15on.src = "images/menu_gallery2_on.gif";
            img15off = new Image();
            img15off.src = "images/menu_gallery2.gif";
            img16on = new Image();
            img16on.src = "images/donate_now.gif";
            img16off = new Image();
            img16off.src = "images/donate_now_off.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");
        }
}