.gallery{
    width:270px;
    height:160px;
    margin:0px auto 0px auto;
    border:1px solid #333;
    -moz-box-shadow:1px 1px 5px #000;
    -webkit-box-shadow:1px 1px 5px #000;
    box-shadow:1px 1px 5px #000;
}

.miniatura{
    width:90px;
    height:80px;
    margin:0px;
    overflow:hidden;
    position:relative;
    float:left;
}
.miniatura a img  {
    border:none;
    position:absolute;   
    top:0px;
    left:0px;
    height:80px;
    opacity: 0.9;
    -moz-opacity: 0.9;
    filter:progid:DXImageTransform.Microsoft.Alpha(opacity=90);
}