a.nounderline{text-decoration:none}

a:link    {text-decoration:none;color:darkblue;background-color:transparent}
a:visited {text-decoration:underline;color:navyblue; background-color:transparent}
a:active  {text-decoration:none;color:blue;background-color:transparent}
a:hover   {text-decoration:underline;color:#900B09; background-color:transparent}