a.annotation {
  position: absolute;
  border: hidden #0000FF medium;
  padding: 0;
  display: none;
}
a.annotation span {
  display: block;
  background: #FFFFFF;
  width: 100%;
  height: 100%;
  opacity: 0.3;
  -moz-opacity: 0.3;
  filter:alpha(opacity=30);
}
a.annotation:hover {

background: #66CCFF;
  width: 100%;
  height: 100%;
  opacity: 0.3;
  -moz-opacity: 0.3;
  filter:alpha(opacity=50);
 }
img.annotated {
  border-width: 0;
}