a:link {
  color: #000080; 
  text-decoration: none; }

a:visited {
  color: #000000; 
  text-decoration: none; }

a:hover { /*this effect is not shown in NN4.xx*/
  color: #000080; 
  text-decoration: underline; }

a:active {/*colour in NN4.xx is red*/ 
  color: #555555; 
  text-decoration: none; }