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

/*IE6兼容 fix和背景透明*/
* html #GB_overlay {
	position: absolute;
	top: expression(eval(document.documentElement.scrollTop));	
	height: expression(eval(document.documentElement.clientHeight));	
	
	background-color: #000;
	background-color: transparent;
	background-image: url(blank.gif);
	filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true, sizingMethod=scale, src="overlay.png");
}

#GB_window {
	left: 0px;
	position: fixed;
	
	/*IE6兼容 fix*/
	_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: 5px 0 5px 5px;
	height:10px;
	margin: 0;
	text-align: left;
}

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