#back
{
    width: 100%;
    height: 100%;
    position: absolute;
    top:0px;
    left: 0px;
    z-index:9998;
    color: #000000;
    font-size: 12pt;
    background-color: #FFFFFF;
    /* IE以外 */
    opacity: 0.8;
    /* IEの場合 */
    filter:progid:DXImageTransform.Microsoft.Alpha(Opacity=80);
    cursor: wait;
    display: none;
}

#loadingLayer {
    background-color: #FFFFFF;
    background-image: url("../img/loading.gif");
    background-position: center 10%;
    background-repeat: no-repeat;
    margin: 80px auto;
    width: 200px;
    height: 100px;
    z-index: 9999;
}