.tabs-nav { /* auto clear */
    display: inline-block;
}
.tabs-nav .tabs-disabled {
    position: relative; /* fixes opacity */
    filter: alpha(opacity=40);
}
.tabs-nav .tabs-disabled a span {
    _height: 19px; /* for some reason the height is 1px to less with opacity... */
    min-height: 19px; /* ...in both IE 6 and 7 */
}
