#GB_overlay { background-image: url(../images/overlay.png); position: absolute; top: 0; left: 0; margin: auto; z-index: 100; width:  100%; height: 1850px; }

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

#GB_window { position: absolute; background: #fff; top: 950px; left: 450px; border: solid 5px #aaa; overflow: auto; width: 400px; height: 400px; z-index: 150; }

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

#GB_caption {
  font: 12px bold helvetica, verdana, sans-serif;
  color: #fff;
  background: #888;
  padding: 2px 0 2px 5px;
  margin: 0;
  text-align: left;
}

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