body {
  height: 100%;
}
div#cupom_capa {
  position:fixed;
  _position:absolute;
  top:0;
  left:0;
  height: 100%;
  width: 100%;
  z-index:200;
  background-color: white;
  filter:alpha(opacity=50);
  opacity: 0.5;
  -moz-opacity:0.5;
  _height:expression(eval($('container').offsetHeight));
}
div#cupom {
  position: fixed;
  _position: absolute;
  _top:expression(eval(100+document.body.scrollTop));
  top: 100px;
  width: 500px;
  height: auto;
  padding: 10px;
  background-color: white;
  z-index:200;
  border: 3px solid gray;
  left: 50%;
  margin-left: -250px;
  text-align: center;

  color: black;
}
div#cupom h1 {
  font-size: 15px;
}
div#cupom p {
  font-size: 11px;
}