span.ext {
    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;
    }
}