#overlay {
  position: fixed;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  background: #000;
  opacity: 0;
  filter: alpha(opacity=0);
  z-index: 50;
}
#flash_container {
  position: fixed;
  opacity: 0;
  filter: alpha(opacity=0);
  left: -9999em;
  z-index: 51;
}