a.closeBtn{
	background: url('../../_js/lightbox/shadowbox/Lightbox_Close.gif') no-repeat right 1px;
	width: 15px;
}
a.closeBtn:hover{
	background: url('../../_js/lightbox/shadowbox/Lightbox_Close.gif') no-repeat right -15px;
	width: 15px;
}

<!--[if IE]>
	.relatedImage {
		height: expression(this.height > 75 ? '75px' : true);
		width: expression(this.width > 75 ? '75px' : true);
	}
	a.gallery span.zoom img{
		filter:progid:DXIdeemageTransform.Microsoft.Alpha(opacity=0);
	}		
	a.gallery span.zoom{					
		filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src='../../s/gallery/enlarge.png',sizingMethod='scale');
		display: inline-block;
	}
<![endif]-->