body {
	font-size: 12px;
	font-family: arial, helvetica, sans-serif;
	color: #333;
	margin: 0;
}

#advertisementContainer {
  position: absolute;
  top: 50%;
  left: 50%;
  
  background-color: #f3f3f3;
  border: 1px solid #ccc;
  width: 420px;
  height: 250px;
  
  margin-top: -125px;
  margin-left: -210px;
  
  visibility: hidden;
  z-index: 10;
}

#advertisement {
  position: inherit;
  margin: 8px;
}

#advertisementClose {
  float: right;
  font-size: 10px;
  font-weight: bold;
}

#advertisement a:link, #advertisement a:hover, #advertisement a:visited {
  color: #2A00AA;
  text-decoration: underline;
}