特效描述：利用jQuery实现 页面定位滚动，利用jQuery实现页面定位滚动代码
代码结构
1. 引入JS
<script src="js/jquery-1.8.3.min.js"></script>
2. HTML代码
<div class="weeks">
<ul class="weekItem" id="weektab">
<li>周一</li>
<li>周二</li>
<li>周三</li>
<li>周四</li>
<li>周五</li>
<li>周六</li>
<li>周日</li>
</ul>
<div class="box01_c" id="weekcon">
<div style="position:relative;">
<dl>
<dt>周一</dt>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
</dl>
<dl>
<dt>周二</dt>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
</dl>
<dl>
<dt>周三</dt>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
</dl>
<dl>
<dt>周四</dt>
<dd><span class="today">今日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
</dl>
<dl>
<dt>周五</dt>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
</dl>
<dl>
<dt>周六</dt>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
</dl>
<dl>
<dt>周日</dt>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
<dd><span>11-3日更新</span><a href="http://www.51qianduan.com/">51前端 - 让开发更简单（www.51qianduan.com）</a></dd>
</dl>
</div>
</div>
</div>
