.multifile_slave { position:relative; overflow:hidden; display:block; padding:0; margin:0 5px 0 0; float:left; }
.multifile_slave .button { margin:0;  position: absolute;}
.multifile_slave .active { position:absolute; margin:0; padding:0; line-height:100%; z-index: 100;
                           opacity: 0;
                           -moz-opacity: 0;
                           filter:progid:DXImageTransform.Microsoft.Alpha(opacity=0);
}