<div id="max1" style="display:none;background:#D9D9FF; Filter:Alpha(Opacity=75);position:absolute;z-index:89; ">
</div>
<div id="replycomment" style="display:none">123 <div>
<input type="button onclick="show()">
<script>
function show(){
document.all.replycomment.style.display="block";
document.all.max1.style.display="block"
document.all.max1.style.height=document.body.scrollHeight;
document.all.max1.style.width=document.body.scrollWidth;}
</script>
</div>
<div id="replycomment" style="display:none">123 <div>
<input type="button onclick="show()">
<script>
function show(){
document.all.replycomment.style.display="block";
document.all.max1.style.display="block"
document.all.max1.style.height=document.body.scrollHeight;
document.all.max1.style.width=document.body.scrollWidth;}
</script>
还是setTimeOut()每一毫秒一次这样好像很好资源哦。