#wrap {
    margin: 20px auto;
    width: 948px;
    background: #fff url('images/background2.jpg');
    background-repeat: repeat-y;
}

#top {
    height: 30px;
    background: #fff url('images/background1.jpg');
}

#bottom {
    height: 30px;
    background: #fff url('images/background3.jpg');
}