.opacityit img{
filter:progid:DXImageTransform.Microsoft.Alpha(opacity=100);
-moz-opacity: 1;
}

.opacityit:hover img{
filter:progid:DXImageTransform.Microsoft.Alpha(opacity=80);
-moz-opacity: 0.8;
}

.opacityit2 img{
filter:progid:DXImageTransform.Microsoft.Alpha(opacity=100);
-moz-opacity: 1;
}

.opacityit2:hover img{
filter:progid:DXImageTransform.Microsoft.Alpha(opacity=50);
-moz-opacity: 0.8;
}