.black_overlayss{  display: none;  position: absolute;  top: 0%;  left: 0%;  width: 100%;  height: 0px;  background-color: black;  z-index:1001;  -moz-opacity: 0.8;  opacity:.80;  filter: alpha(opacity=80);  }  
  
.white_content { text-align:left;  display: none;  position: absolute;  top: 0%;  left: 50%;  width: 500px;  height: 400px;  z-index:1002; margin-top:200px; margin-left:-250px;}
  
.close_bottom {  display: none;  position: absolute;  top: 0%;  left: 0%;    z-index:1003;  margin-top:190px; margin-left:1000px;}