#GB_overlay_general {
  background-image: url(overlay.png); 
  position: absolute;
  margin: auto;
  top: 0;
  left: 0;
  z-index: 160;
  width:  100%;
  height: 100%;
}

* html #GB_overlay_general {
  background-color:#000000;
  /* for IE */
  filter:alpha(opacity=60);
  /* CSS3 standard */
  opacity:0.6;

  background-image: none;
  /*filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src="overlay.png", sizingMethod="scale");*/
}

#GB_window_general {
  top: 10px;
  left: 0px;
  position: absolute;
  background: #fff;
  border: 5px solid #aaa;
  overflow: auto;
  width: 400px;
  height: 400px;
  z-index: 180;
}

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

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

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