#GB_overlay {
  background-image: url(overlay.png); 
  position: absolute;
  margin: auto;
  top: 0;
  left: 0;
  z-index: 100;
  width:  100%;
  height: 100%;
}

* html #GB_overlay {
  background-color: #000;
  background-color: transparent;
  background-image: url(blank.gif);
  filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src="overlay.png", sizingMethod="scale");
}

#GB_window {
  top: 100px;
  left: 0px;
  position: absolute;
  background: #fff;
  z-index: 150;
  border: 0px solid #ffffff;
  border-collapse:collapse;
  border-style:none;
  border-width:0px;
}

#GB_frame {
  border: 0px solid #ffffff;
  overflow:hidden;
  width: 100%;
  border-collapse:collapse;
  border-style:none;
  border-width:0px;
}