.thumb{position:relative; margin:0; width:80px; height:80px; float:left; margin:15px; }
.thumb_bg{position:absolute; top:0; left:0; z-index:1;}
.thumb_image{margin:10px; position:absolute; top:9px; width:80px; height:80px; left:9px; z-index:2; border:1px solid #fff;}
img {float:left;-ms-filter:"progid:DXImageTransform.Microsoft.Alpha(Opacity=100)";filter:alpha(opacity=100);-moz-opacity:1;-khtml-opacity:1;opacity:1;}
img:hover {-ms-filter:"progid:DXImageTransform.Microsoft.Alpha(Opacity=90)";filter:alpha(opacity=90);-moz-opacity:0.9;-khtml-opacity:0.9;opacity:0.9;}
.thumb_overlay{position:absolute; top:9px; left:9px;z-index:3}
.thumb_big{position:relative; margin:0; width:117px; height:120px; float:left}
.thumb_bg_big{position:absolute; top:0; left:0; z-index:1}
.thumb_image_big{position:absolute; top:8px; width:100px; height:100px; left:8px; z-index:2}