.black_overlay{
    display: none;
    position: absolute;
    top: 0%;
    left: 0%;
    width: 100%;
    height: 900;
    background-color: black;
    z-index:1001;
    -moz-opacity: 0.8;
    opacity:.80;
    filter: alpha(opacity=80);
}
.white_content {
    display: none;
    position: absolute;
    top: 100;
    left: 15%;
    width: 70%;
    height: 500;
    padding: 16px;
    border: 6px black;
    background-color: white;
    z-index:1002;
    overflow: auto;
}