#mask {
  position:absolute;
  left:0;
  top:0;
  z-index:9000;
  background-color:#000;
  display:none;
  opacity:0.7; filter:alpha(opacity=70); -moz-opacity: 0.7;
}
  
#boxes .window {
  position:absolute;
  left:0;
  top:0;
  display:none;
  z-index:9999;
  padding:40px;
  background:#ffffff;
  border-radius:10px;
  -moz-border-radius:10px;
  -webkit-border-radius:10px;
}

#boxes .close { position:absolute; right:10px; top:10px; color:#ff0000; font-weight:bold; text-decoration: none; opacity:0.5; filter:alpha(opacity=50); -moz-opacity: 0.5; }
#boxes .close:hover { opacity:1; filter:alpha(opacity=100); -moz-opacity: 1;}