自己写了一个展开和收起的js效果...分享给大家

 1         <tbody>
 2           <input type="hidden" id="record" value="${qr.count }">
 3           <c:forEach items="${qr.results }" var="info" varStatus="index">
 4             <tr id="user_info_${info.id }">
 5               <td class="userWrapper_right_collect">
 6                 <p class="ml20 clearfix mb10">
 7                   <strong class="ex_green_fg mr10 fl">${info.sender }</strong> <span id="span_content_${info.id }" ${index.count eq 1 ? "class='fl w500'" : "class='fl symbleDot w500'" }>${info.content }</span>
 8                 </p> <a href="javascript:void(0)" onclick="cancelThisInfo(${info.id});" class="fr mr20 ex_green_fg">删除</a> <span class="fr ml5 mr5">|</span> <a href="javascript:void(0)" class="fr ex_green_fg" id="a_${info.id }" name="${index.count eq 1 ? '1' : '0' }" onclick="infoContent('${info.id}');"> <c:if test="${index.count eq 1 }" var="up">
 9                     <span id="span_${info.id }" class="ex_arrow ex_arrowUp mr5"> </span>收起
10                   </c:if> <c:if test="${!up }">
11                     <span class="ex_arrow ex_arrowDown mr5"> </span>展开
12                   </c:if>
13               </a> <span class="fr mr10 gray"><fmt:formatDate value="${info.createTime}" pattern="yyyy-MM-dd HH:mm:ss" /></span>
14               </td>
15             </tr>
16           </c:forEach>
17         </tbody>
18       

 1 /**
 2  * 展开通知和收起通知<br>
 3  * 1.点击某一个id的展开功能时候，首先所有的关闭，再展开id通知，展开id时候，class='fl w500'  class="ex_arrow ex_arrowUp mr5"  收起
 4  * 2.点击收起某一个id时候，class='fl symbleDot w500' class="ex_arrow ex_arrowDown mr5" 展开
 5  * @date 2013-3-5
 6  * @author xhw
 7  *
 8  * @param id
 9  */
10 function infoContent(id) {
11     var a_name = $("#a_" + id).attr("name");
12     var record = $("#record").val();
13     
14     if(id == null || id == ""){
15         alert("请求出错！");
16     }else if(id == record){
17         //本身对象(现在点击的和上一步操作的对象是同一个)
18         if(a_name == "0"){
19             $("#span_content_" + id).attr("class","fl w500");
20             $("#a_" + id).html("<span class='ex_arrow ex_arrowUp mr5'></span>收起");
21             $("#a_" + id).attr("name", "1");
22         }else if(a_name == "1"){
23             $("#span_content_" + id).attr("class","fl symbleDot w500");
24             $("#a_" + id).html("<span class='ex_arrow ex_arrowDown mr5'></span>展开");
25             $("#a_" + id).attr("name", "0");
26             //$("#record").attr("value",id);
27         }
28     }else if(id != record){
29         //新对象id，上一次点击对象record
30         var older_name = $("#a_"+record).attr("name");
31         //上一次点击的对象
32         if(older_name == "0"){
33             $("#span_content_" + record).attr("class","fl w500");
34             $("#a_" + record).html("<span class='ex_arrow ex_arrowUp mr5'></span>收起");
35             $("#a_" + record).attr("name", "1");
36         }else if(older_name == "1"){
37             $("#span_content_" + record).attr("class","fl symbleDot w500");
38             $("#a_" + record).html("<span class='ex_arrow ex_arrowDown mr5'></span>展开");
39             $("#a_" + record).attr("name", "0");
40         }
41         //新对象
42         if(a_name == "0"){
43             $("#span_content_" + id).attr("class","fl w500");
44             $("#a_" + id).html("<span class='ex_arrow ex_arrowUp mr5'></span>收起");
45             $("#a_" + id).attr("name", "1");
46         }else if(a_name == "1"){
47             $("#span_content_" + id).attr("class","fl symbleDot w500");
48             $("#a_" + id).html("<span class='ex_arrow ex_arrowDown mr5'></span>展开");
49             $("#a_" + id).attr("name", "0");
50         }
51         $("#record").attr("value",id);
52     }
53 };