piwigo/themes/default/fix-ie7.css

/* fix IE with another layout for thumbnails */

.thumbnails .wrap2 {
  display: block;
  position: relative;
  text-align: left;
}
.thumbnails .wrap2 A,
.thumbnails .wrap2 SPAN {
  overflow: visible;
  position: absolute;
  top: 50%;
  text-align: center;
}

.thumbnails IMG.thumbnail {
  position: relative;
  top: -50%;   
  margin-top: 2%;
}

.pwg-icon {
	display: block;
}