jQuery实现简单的手风琴效果

<div class="item_box box10">
 <div class="item_box_wp">
  <div class="voice_2">
   <ul>
    <li class="li1" id="li1">
     <div class="fold" style="display:none;">
      <span class="img"></span>
      <span class="txt">插件库</span>
     </div>
     <div class="unfold" style="display:block">
      <dl>
       <dt><img src="images/img10.png" /><https://img.qb5200.com/download-x/dt>
       <dd>
       <https://img.qb5200.com/download-x/dd>
       <dd>使用语音外呼的模式将指定的语音呼入至接听人，可通过这种方式为针对性的客户提供会议通知、活动通知，并可通过API接口程序化控制呼出时间、呼出效果反馈<https://img.qb5200.com/download-x/dd>
      <https://img.qb5200.com/download-x/dl>
     </div>
    </li>
    <li class="li2">
     <div class="fold">
      <span class="img"></span>
      <span class="txt">点击呼叫</span>
     </div>
     <div class="unfold">
      <dl>
       <dt><img src="images/img42.png" /><https://img.qb5200.com/download-x/dt>
       <dd>
       <https://img.qb5200.com/download-x/dd>
       <dd>通过APP应用内按钮或浏览器网页按钮点击并发起IP通话、运营商线路通话服务，减少用户交互，提升用户体验<https://img.qb5200.com/download-x/dd>
      <https://img.qb5200.com/download-x/dl>
     </div>
    </li>
    <li class="li3">
     <div class="fold">
      <span class="img"></span>
      <span class="txt">直拨通话</span>
     </div>
     <div class="unfold">
      <dl>
       <dt><img src="images/img49.png" /><https://img.qb5200.com/download-x/dt>
       <dd>
       <https://img.qb5200.com/download-x/dd>
       <dd>无论是智能终端、浏览器模式，通过APP或者网页发起通话，接通方为手机用户或固话用户，常见集成至与企业服务相关的移动应用、企业客服座席。<https://img.qb5200.com/download-x/dd>
      <https://img.qb5200.com/download-x/dl>
     </div>
    </li>
    <li class="li4">
     <div class="fold">
      <span class="img"></span>
      <span class="txt">回拨通话</span>
     </div>
     <div class="unfold">
      <dl>
       <dt><img src="images/img50.png" /><https://img.qb5200.com/download-x/dt>
       <dd>
       <https://img.qb5200.com/download-x/dd>
       <dd>同时通过平台方发起主叫和被叫双方，定制通话方满足不同需求的客户服务，企业服务易可根据具体业务需求为客户提供定制服务<https://img.qb5200.com/download-x/dd>
      <https://img.qb5200.com/download-x/dl>
     </div>
    </li>
    <li class="li5">
     <div class="fold">
      <span class="img"></span>
      <span class="txt">互联网通话</span>
     </div>
     <div class="unfold">
      <dl>
       <dt><img src="images/img51.png" /><https://img.qb5200.com/download-x/dt>
       <dd>
       <https://img.qb5200.com/download-x/dd>
       <dd>基于互联网纯网络通话，无运营商和地域限制，拥有更清晰的语音质量，支持语音三方密钥的加密传输<https://img.qb5200.com/download-x/dd>
      <https://img.qb5200.com/download-x/dl>
     </div>
    </li>
    <li class="li6">
     <div class="fold">
      <span class="img"></span>
      <span class="txt">语音会议</span>
     </div>
     <div class="unfold">
      <dl>
       <dt><img src="images/img52.png" /><https://img.qb5200.com/download-x/dt>
       <dd>
       <https://img.qb5200.com/download-x/dd>
       <dd>同时桥接多人基于IP、电话语音的会议服务，基于API控制会议时长、成员邀请、禁音、移除等功能。<https://img.qb5200.com/download-x/dd>
      <https://img.qb5200.com/download-x/dl>
     </div>
    </li>
   </ul>   
  </div>
 </div>
</div>
 

$(function(){
 //语音通知手风琴效果
 $(".voice_2 ul li").each(function(){
 var fold = $(this).find(".fold");
 var unfold = $(this).find(".unfold");
 if(fold.is(":hidden")){
 $(this).width(680);
 }else{
 $(this).width(100);
 }
 })
 
 $(".voice_2 ul li").click(function(){
 var li_index = $(this).index();
 $(this).animate({width:680},200);
 $(this).find(".unfold").show();
 $(this).find(".fold").hide();
 $(this).siblings().animate({width:100},200);
 $(this).siblings().find(".unfold").hide();
 $(this).siblings().find(".fold").show();
 })