a:link {
  color: #224571; 
  text-decoration: none; 
  background: none;}/*normal links in the text*/
a:visited {
  color: #666666; 
  text-decoration: none; 
  background: none;}
a:hover { /*this effect is not shown in NN4.xx*/
  color: #FF7813; 
  text-decoration: underline; 
  background: none;}