.white_box {
    display:none;
    text-align:left;
    background-color:#FFF;
    width:620px;
    border:2px solid #ccc;
    position:absolute;
    z-index:1000;
    top:100;
    margin-left:60px;
    padding:30px;
}
.white_box_content {
    width:540px;
}
#black_t_bkg {
    display:none;
    background-color:#000;
    filter:alpha(opacity=70);
    opacity: 0.7;        
    position:absolute;
    z-index:999;
    top:0;        
    left:0;
    width:100%;
    height:1024px;
}