#GB_overlay {
background-image:; 
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: ;
filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src="overlay.png", sizingMethod="scale");
}
#GB_window {
top: 75px;
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: 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;
}