if (document.images) {
    pic1on = new Image(57, 35);
    pic1on.src = "images/nav/link2_01.png";

    pic1off = new Image(57, 35);
    pic1off.src = "images/nav/link_01.png";

    pic2on = new Image(130, 35);
    pic2on.src = "images/nav/link2_02.png";

    pic2off = new Image(130, 35);
    pic2off.src = "images/nav/link_02.png";

    pic3on = new Image(128, 35);
    pic3on.src = "images/nav/link2_03.png";

    pic3off = new Image(128, 35);
    pic3off.src = "images/nav/link_03.png";

    pic4on = new Image(97, 35);
    pic4on.src = "images/nav/link2_04.png";

    pic4off = new Image(97, 35);
    pic4off.src = "images/nav/link_04.png";

    pic5on = new Image(84, 35);
    pic5on.src = "images/nav/link2_05.png";

    pic5off = new Image(84, 35);
    pic5off.src = "images/nav/link_05.png";

    pic6on = new Image(114, 35);
    pic6on.src = "images/nav/link2_06.png";

    pic6off = new Image(114, 35);
    pic6off.src = "images/nav/link_06.png";

    pic7on = new Image(114, 35);
    pic7on.src = "images/nav/contact.png";

    pic7off = new Image(114, 35);
    pic7off.src = "images/nav/contact_2.png";
    
    pic8on = new Image(114, 35);
    pic8on.src = "images/nav/viewcart.png";

    pic8off = new Image(114, 35);
    pic8off.src = "images/nav/viewcart2.png";

    addToCart1on = new Image(114, 35);
    addToCart1on.src = "images/btn2_01.png";

    addToCart1off = new Image(114, 35);
    addToCart1off.src = "images/btn1_01.png";

    addToCart2on = new Image(114, 35);
    addToCart2on.src = "images/btn2_02.png";

    addToCart2off = new Image(114, 35);
    addToCart2off.src = "images/btn1_02.png";

    addToCart3on = new Image(114, 35);
    addToCart3on.src = "images/btn2_03.png";

    addToCart3off = new Image(114, 35);
    addToCart3off.src = "images/btn1_03.png";
    
    add3Packon = new Image(114, 35);
    add3Packon.src = "images/3pack_2.png";

    add3Packoff = new Image(114, 35);
    add3Packoff.src = "images/3pack_1.png";
    
}
function lightup(imgName) {
    if (document.images) {
        imgOn = eval(imgName + "on.src");
        document[imgName].src = imgOn;
    }
}

function turnoff(imgName) {
    if (document.images) {
        imgOff = eval(imgName + "off.src");
        document[imgName].src = imgOff;
    }
}