if (document.images) {
    img1 = new Image();
    img1.src = "imgs/works-top2.gif";
    img2 = new Image();
    img2.src = "imgs/works-top2b.gif";
    img3 = new Image();
    img3.src = "imgs/top-profile2.gif";
    img4 = new Image();
    img4.src = "imgs/top-map2.gif";
    img5 = new Image();
    img5.src = "imgs/top-tatemono2.gif";
    img6 = new Image();
    img6.src = "imgs/top-toilet2.gif";
    img7 = new Image();
    img7.src = "imgs/top-hitokoto2.gif";
    img8 = new Image();
    img8.src = "imgs/top-hibi2.gif";
}
function setImage(name, src) {
    if (document.images) {
        document.images[name].src = src;
    }
}