function preloadImg(arg) {
    if (document.images) {
        rslt = new Image();
        rslt.src = arg;
    }
}
function imgSwap(obj, imgFile) {
    obj.src = "images/" + imgFile;
}
preloadImg("images/gluv-renu.jpg");
preloadImg("images/home_up.png");
preloadImg("images/videos_up.png");
preloadImg("images/faqs_up.png");
preloadImg("images/products_up.png");
preloadImg("images/contact_up.png");
preloadImg("images/home_dwn.png");
preloadImg("images/videos_dwn.png");
preloadImg("images/faqs_dwn.png");
preloadImg("images/products_dwn.png");
preloadImg("images/contact_dwn.png");
preloadImg("images/gluv-renu_content.jpg");