td { text-align: center }
div.image {position: relative;
        text-align: center;
}
div.nav {position: relative }
div.next { position:absolute; top:0;
        right:0;
        width:50%;
        text-align: center;
}
div.prev {
        position:absolute;
        top:0;
        left:0;
        width:50%;
        text-align: center;
}