span.ext {
  background: url(extlink_s.png) 2px center no-repeat;
  width: 10px;
  height: 10px;
  padding-right: 12px;
  text-decoration: none;
}
span.mailto {
  background: url(extlink_s.png) -20px center no-repeat;
  width: 10px;
  height: 10px;
  padding-right: 12px;
  text-decoration: none;
}

/* Hide the extra spans when printing. */
@media print {
  span.ext, span.mailto {
    display: none;
    padding: 0;
  }
}