一、加入<head>间
<script language="JScript">
function high(which2){
theobject=which2
highlighting=setInterval("highlightit(theobject)",50)
}
function low(which2){
clearInterval(highlighting)
which2.filters.alpha.opacity=20
}

function highlightit(cur2){
if (cur2.filters.alpha.opacity<100)
cur2.filters.alpha.opacity+=5
else if (window.highlighting)
clearInterval(highlighting)
}
</script>

二、加入<body>间
<img style="filter:alpha(opacity=40)"
onMouseOver="high(this)" onMouseOut="low(this)" align="texttop"
border="0" src="图片的URL">