<head>
<script type="text/javascript">
function show(){
document.getElementById("hid").style.display=document.getElementById("hid").style.display==""?"none":"";
}
</script>
</head>
<body>
<a href="javascript:void()" onclick="show();">点击此按钮隐藏或显示</a>
<div id="hid" style="display:none">要隐藏的内容</div>
</body>