/* Z-index of #mask must lower than #boxes .window */
#mask {
  position:absolute;
  z-index:9000;
  background-color:#000;
  display:none;
  left:0;
  margin-top:-12px;
}
  
#boxes .window {
  position:absolute;
  width:440px;
  height:200px;
  display:none;
  z-index:9999;
  padding:20px;
}


/* Customize your modal window here, you can add background image too */
#boxes #dialog {
  width:375px; 
  height:403px;
}