ol#toc {
    height: 2em;
    list-style: none;
    margin: 15px auto -10px auto;
    padding: 0;
    width:980px;
}

ol#toc li {
    background-color:#FFF;
    float: left;
    margin: 0 5px 0 0;
    padding-left: 10px;
}

ol#toc a {
    color: #000;
    display: block;
    float: left;
    height: 2em;
    line-height: 2em;
    padding-right: 10px;
    text-decoration: none;
}

ol#toc li.current {
    background-color: #66cc33;
}

ol#toc li.current a {
    color: #fff;
    font-weight: bold;
}

div.content {
    clear: left;
    height:300px;
}