#thover{
  position:fixed;
  background:#000;
  width:100%;
  height:100%;
  opacity: .6;
  z-index:9999;
  top:0;
}

#tpopup{
  position:fixed;
  width:600px;
  height:600px;
  left:50%;
  top:15%;
  margin-left:-300px; /* width/2 + padding-left */
  text-align:center;
  z-index:999999;
}
#tclose{
  position:absolute;
  background:black;
  color:white;
  right:-15px;
  top:-15px;
  border-radius:50%;
  width:30px;
  height:30px;
  line-height:30px;
  text-align:center;
  font-size:8px;
  font-weight:bold;
  font-family:'Arial Black', Arial, sans-serif;
  cursor:pointer;
}