Es solo css, analiza su codigo resumido en un solo link....
<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style type="text/css">
a.apartado:link, a.apartado:visited, a.apartado:active {color : #FFFFFF;font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 7pt; color: #FFFFFF; text-decoration : none;}
a:hover.apartado { background-color : #0058b0; color : #FFFFFF;}
//submit { }
input { font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 7pt}
select { font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 7pt; background-color: #50C5C3}
a:active { font-weight: bold; color: #375099; text-decoration: none}
a:hover { font-weight: bold; color: #375099; text-decoration: underline background-color : #0058b0; color : #FFFFFF;}
a:link { font-weight: bold; color: #375099; text-decoration: none}
a:visited { font-weight: bold; color: #375099; text-decoration: none}
</style>
</head>
<body bgcolor="#000000" text="#000000">
<p><a href="#" class="apartado">link1</a> </p>
</body>
</html>
