Links com cores e formatações diferenciadas com HTML/PHP

<html>
<head>
<style type=”text/css”>
.class1 A:link {text-decoration: none}
.class1 A:visited {text-decoration: none}
.class1 A:active {text-decoration: none}
.class1 A:hover {text-decoration: underline; color: red;}
.class2 A:link {text-decoration: underline overline}
.class2 A:visited {text-decoration: underline overline}
.class2 A:active {text-decoration: underline overline}
.class2 A:hover {text-decoration: underline; color: green;}
</style>
</head>
<body>
ONE TYPE OF LINKS
<br>
<span class=”class1″>
<a href=”http://www.yahoo.com”>YAHOO</a>
<br>
<a href=”http://www.google.com”>GOOGLE</a>
</span>
<br>
<br>
ANOTHER TYPE OF LINKS
<br>
<span class=”class2″>
<a href=”http://www.yahoo.com”>YAHOO</a>
<br>
<a href=”http://www.google.com”>GOOGLE</a>
</span>
</body>
</html>