.thumb-img {
	border-top:1px solid #CCC; border-left:1px solid #CCC; border-bottom:1px solid #AAA; border-right:1px solid #AAA;
	position:relative; 
	width:80px; height:80px;
	margin:10px;
	float: left;
}
.thumb-inner {
	position:relative; overflow:hidden; width:100%; height:100%; 
}
.thumb-img img {
	border:0;
	opacity: 0.55;
    	filter:alpha(opacity=55);
}

.thumb-img:hover img {
	opacity: 1;
    	filter:alpha(opacity=100);
}