.fancybox-wrap {
    z-index: 100;
}

#interstitialClose {
    display: block;
    width: 30px;
    height: 30px;
    background-image: url('/Styles/Fancybox/fancy_close.png') !important;
    position: absolute;
    top: -10px;
    right: -10px;
    z-index: 100000;
    cursor: pointer;
}