代码示例：（标识：dhtm_menu_image）
<html>
<head>
<style>
img
{
filter:gray()
}
</style>
<script type="text/javascript">
function color(elmnt)
{
elmnt.style.filter=false
}
function gray(elmnt)
{
elmnt.style.filter="gray()"
}
</script>
</head>
<body>
请把鼠标移动到图像链接上：
<p>
<a href="/static/demo/images/eg_landscape.jpg">
<img border="0" onmouseover="color(this)" onmouseout="gray(this)" src="/logo.png" /><br /></a>
<a href="http://www.altavista.com/">
<img border="0" onmouseover="color(this)" onmouseout="gray(this)" src="/static/demo/images/eg_altavista.gif" /><br /></a>
<a href="http://www.yahoo.com/">
<img border="0" onmouseover="color(this)" onmouseout="gray(this)" src="/static/demo/images/eg_yahoo.gif" /></a>
</p>
</body>
</html>
