代码示例:(标识:dhtm_mask)
<html>
<head>
<style>
div
{
position:absolute;
left:10px;
top:100px;
width:160px;
height:120px;
}
</style>
<script type="text/javascript">
function getFilter()
{
document.getElementById('myDiv').style.filter="mask(color=#ffffff)"
}
function noFilter()
{
document.getElementById('myDiv').style.filter=false
}
</script>
</head>

<body>
<p>本例演示如何动态地插入遮罩滤镜。</p>
<p>请把鼠标移动到图像上:</p>
<div><img src="/static/demo/images/eg_landscape.jpg" /></div>
<div onmouseover="getFilter()" onmouseout="noFilter()" id="myDiv">
<h1>Mouse over this image landscape</h1></div>
</body>
</html>
运行结果: