#loading-block {
    display: none;
    position: fixed;
    top: 0px;
    right: 0px;
    bottom: 0px;
    left: 0px;
    background-color: #000000;
    background-image: url(../img/loading.gif);
    background-position: center center;
    background-repeat: no-repeat;
    opacity: 0.8;
    filter: alpha(opacity=80);
    z-index: 1000;
}