/* use a semi-transparent image for the overlay */
  #overlay {
    display:none;
    background-image:url(http://hindunet.org/hindunet_images/transparent.png);
    color:#efefef;
    height:450px;
  }
  /* container for external content. uses vertical scrollbar, if needed */
  div.contentWrap {
    height:441px;
    overflow-y:auto;
  }