#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: 10px;
  left: 0px;
  position: absolute;
  background: #fff;
  border: 5px solid #aaa;
  overflow: auto;
  width: 400px;
  height: 400px;
  z-index: 150;
}

#GB_frame {
  border: 0;
  overflow: auto;
  width: 100%;
  height: 378px;
}

#GB_caption {
  font-size: 10px;
  font-weight: bold;
  font-family:Arial, Verdana, sans-serif;
  color: #fff;
  background: url(greyBar.gif) repeat-x;
  padding: 3px 0 3px 8px;
  margin: 0;
  text-align: left;
  text-transform: uppercase;
  text-shadow: 0 -1px 1px #555;
}

#GB_window img {
  position: absolute;
  top: 2px;
  right: 5px;
  cursor: pointer;
  cursor: hand;
}