body {background-image: url('images/background.gif');
background-attachment: fixed;
}
a.norm:link     {color:blue}
a.norm:visited  {color:black}
a.norm:hover    {color:green; text-decoration: none;}
a.norm:active   {color:red}

a.grad:link     {color:#cccccc}
a.grad:visited  {color:#cccccc}
a.grad:hover    {color:yellow; font-weight: bold; text-decoration: none;}
a.grad:active   {color:red}