.grayBox{position:fixed; top:0%; left:0%; width:100%; height:100%; background-color:black; z-index:1001; -moz-opacity:0.8; opacity:.80; filter:alpha(opacity=80); }
.box_content{position:fixed; top:12%; left:20%; right:20%; width:60%; padding:16px; z-index:1002; overflow:auto; }