#lightbox{
    display:none;
    position: absolute;
    top:50%;
    left:50%;
    z-index:9999;
    width:750px;
    height:275px;
    margin:-150px 0 0 -375px;
    }
#lightbox[id]{ /* IE6 and below Can't See This */
    position:fixed;
    }

#overlay{
    display:none;
    position:absolute;
    top:0;
    left:0;
    width:100%;
    height:100%;
    z-index:5000;   
    background-color:#000;
    -moz-opacity: 0.8;
    opacity:.80;
    filter: alpha(opacity=80);
    }
#overlay[id]{ /* IE6 and below Can't See This */
    position:fixed;
    }