function newImage(arg) {
        if (document.images) {
                rslt = new Image();
                rslt.src = arg;
                return rslt;
        }
}

function changeImages() {
        if (document.images && (preloadFlag == true)) {
                for (var i=0; i<changeImages.arguments.length; i+=2) {
                        document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
                }
        }
}

var preloadFlag = false;
function preloadImages() {
        if (document.images) {
                the_band_sub_over = newImage("images/sub/the_band_sub-over.jpg");
                clients_sub_over = newImage("images/sub/clients_sub-over.jpg");
                song_list_sub_over = newImage("images/sub/song_list_sub-over.jpg");
                fan_mail_sub_over = newImage("images/sub/fan_mail_sub-over.jpg");
                faq_sub_over = newImage("images/sub/faq_sub-over.jpg");
                contact_sub_over = newImage("images/sub/contact_sub-over.jpg");
                preloadFlag = true;
        }
}