<!DOCTYPE html>
<html>
<head>
<script language="JavaScript">
function close1(){
document.getElementById("sh").style.display="none";
}
function show(){
document.getElementById("sh").style.display="block";
}
</script>
</head>
<body>
<div id="sh" style="display:none;border:1px solid red;z-index:2;position:absolute;left:100px;top:150px;clear:both;padding:5px;">
<p>
<span>姓名：</span>
<input type="text">
</p>
<div style="float:right;padding-right:10px;">
<button onclick="close1()">关闭</button>
</div>
</div>
<input type="button" value="评论" onclick="show()">
</body>
</html>