#zoombox {
  background-color: #FFF;
  border: 2px solid red;
  filter: alpha(opacity=50);
  opacity: 0.5;
  -moz-opacity: 50%;
  z-index:1;
  position:absolute;
  left:0px;
  top:0px;
  width:0px;
  height:0px;
  overflow:hidden;
  visibility:hidden;
}
#ovzoombox {
  border: 1px solid red;
  z-index:1;
  position:absolute;
  left:0px;
  top:0px;
  width:0px;
  height:0px;
  overflow:hidden;
  visibility:hidden;
}