简单的显示关闭

      <style>

#detailbox { border: solid 1px #EEE; background:#F7F7F7; margin:20px; padding:10px; display:none;}

      </style>

      <a style="cursor:pointer" onclick="show('detailbox')">(详情)</a>

      <div id="detailbox">内容</div>

      <script>

function show(id){

var elem  = document.getElementById(id);

if(elem.style.display != 'block'){

elem.style.display = 'block';

}else{

elem.style.display = 'none';

}

}

    </script>