@media screen and (min-width:640px) {
#contentBox {
    width:960px;
    position:relative;
    margin-right:auto;
    margin-bottom:0;
    margin-left:auto;
    padding-bottom:30px;
}
#slideShow {
    width:960px;
    height:720px;
    left:0;
    top:-12px;
    position:absolute;
    z-index:4;
}
}