  .black_overlay{
      display: none;
      position: absolute;
      top: 0%;
      left: 0%;  width:
      100%;  height: 100%;
      background-color: black;
      z-index:1001;
      -moz-opacity: 0.8;
      opacity:.80;
      filter: alpha(opacity=80);
  }

  .white_content {
  	display: none;
  	position: absolute;
  	top: 10%;
  	left: 15%;
  	width: 70%;
  	height: 80%;
  	box-shadow: 0 0 8px rgba(0, 0, 0, .4);
  	background-color: white;  z-index:1002;  overflow: auto;
  	}