.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);
}

.popup_content {
  display: none;
  position: absolute;
  top: 25%;
  left: 25%;
  width: 50%;
  height: 50%;
  padding: 16px;
  border: 16px solid orange;
  background-color: white;
  z-index:1002;
  overflow: auto;
}