JavaScript实现鼠标悬停链接切换网页背景色

<html>
<head>
<title>鼠标放上链接改变网页背景颜色</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<SCRIPT LANGUAGE="JavaScript">
function goHist(a) 
{
  history.go(a);
}
</script>
</head>
<body>
<center>
<h2>鼠标放到相应链接上看看！</h2>
<table border=1 borderlight=green style="border-collapse: collapse" cellpadding="5" cellspacing="0">
<tr><td align=center>
<a href="#" onMouseOver="document.bgColor='skyblue'">天空蓝</a>
<a href="#" onMouseOver="document.bgColor='red'">大红色</a>
<a href="#"onMouseOver="document.bgColor='#0066CC'">清新蓝</a> 
</td></tr>
</table>
</center>
</body>
</html>