#thumbs a
{ display: block;
  float: left;
  width: 50px;
  height: 50px;
}

#thumbs a img
{ width: 50px;
  height: 50px;
  border: 0;
}

#thumbs a:hover img
{ position: absolute;
  width: auto;
  height: auto;
  right: 250px;
  top: 223px;
  z-index: 10000;
}