html, body, #content, #sp { height:100%; }
body { margin:0; padding:0; }

#content {
    width: 1110px;
    margin: auto;
    position: relative;
    z-index: 256;
}

#sp {
    float: left;
}

#leftAd {
    width: 160px;
    float: left;
    padding-top: 15px;
    padding-right: 20px;
}

#rightAd {
    width: 160px;
    float: right;
    padding-top: 15px;
}

.hidden {
    display: none;
}