.

.popup_block{
    display:none;
    background:#fff;
    float:left;
    position:fixed;
    text-align:justify;
    top:58.3%;
    left:57.6%;
    height:350px;
    overflow:auto;
    padding:10px 10px 10px 10px;
    z-index: 99999;
}

*html #fade {position: absolute;}
*html .popup_block {position: absolute;}

#fade {
    display:none;
    position:fixed;
    left:0px;
    top:0px;
    width:100%;
    height:100%;
    z-index:9999;
    background:#fff;
    opacity:0;
}