hr        { color: blue; text-align: center; }
 a:link    { color: #006633; text-decoration: none; }
 a:visited { color: #006633; text-decoration: none; }
 a:active  { color: #006633; text-decoration: none; }
 a:hover   { color: #993333; text-decoration: none; }
.hdr       { text-align: center; color: black; font-weight: bold; 
             font-style: italic; font-size: 24pt; }
.err       { text-align: center; color: red; font-weight: bold; }
.warn      { text-align: center; color: magenta; font-weight: bold; }
.ok        { text-align: center; color: green; font-weight: bold; }