在<head>和</head>之间加上CSS语法控制：
<style type="text/css">
a:link { text-decoration: none; color: #009900 }
a:active { text-decoration: none; color: #ee0000 }
a:visited { text-decoration: none; color: #660066 }
a:hover { text-decoration: underline overline; color: #000000}
</style>
