<div class="main-lnav">
                <p><a href="##"><img src="skin/2016/images/jrtt.png"></a></p>
                <ul>
                    <li class="lgo"><a href="##">推荐</a></li>
                    <li><a href="##">热文</a></li>
                    <li><a href="##">邯郸</a></li>
                    <li><a href="##">房企</a></li>
                    <li><a href="##">独家</a></li>
                    <li><a href="##">置业</a></li>
                    <li><a href="##">专题</a></li>
                    <li><a href="##">土地</a></li>
                    <li><a href="##">楼市</a></li>
                </ul>
            </div>
        </div>
        <!--左侧导航结束-->
        <!--中间内容-->
        <div class="main-content">
            <div class="tab xian">
            <!--轮播-->
            <div id="focus-banner">
                    <ul id="focus-banner-list">
                        <li>
                            <a href="#" class="focus-banner-img">
                                <img src="skin/2016/images/banner2.jpg" alt="">
                            </a>
                            <div class="focus-banner-text">
                                <p>这是一句广告语</p>                    
                            </div>
                        </li>
                        <li>
                            <a href="#" class="focus-banner-img">
                                <img src="skin/2016/images/banner3.jpg" alt="">
                            </a>
                            <div class="focus-banner-text">
                                <p>这是二句广告语</p>
                            </div>
                        </li>
                        <li>
                            <a href="#" class="focus-banner-img">
                                <img src="skin/2016/images/banner4.jpg" alt="">
                            </a>
                            <div class="focus-banner-text">
                                <p>这是三句广告语</p>
                            </div>
                        </li>
                        <li>
                            <a href="#" class="focus-banner-img">
                                <img src="skin/2016/images/banner5.jpg" alt="">
                            </a>
                            <div class="focus-banner-text">
                                <p>这是四句广告语</p>
                            </div>
                        </li>
                    </ul>
                    <a href="javascript:;" id="next-img" class="focus-handle"></a>
                    <a href="javascript:;" id="prev-img" class="focus-handle"></a>
                    <ul id="focus-bubble"></ul>
                </div>
                <!--轮播-->
                <div class="lie">
                     <div class="investment_con">
                         
                        <div class="lie-Title">
                            <a href="##"><img src="skin/2016/images/lie-title1.jpg"></a>
                        </div>
                        <div class="lie-outline">
                            <ul>
                                <li><a href="##">恋家网质询阿斯达克就爱上看来大家可拉伸的金坷垃圣的金坷垃圣诞节阿喀琉斯简单快乐</a></li>
                                <li><p>阿斯达克就爱上看来大家可拉伸的金坷垃圣诞节阿喀琉斯简单快乐</p></li>
                            </ul>
                        </div>
                    </div>
                </div>    
            </div>
            <div class="tab">
                <div class="lie">
                     <div class="investment_con">
                         
                        <div class="lie-Title">
                            <a href="##"><img src="skin/2016/images/lie-title1.jpg"></a>
                        </div>
                        <div class="lie-outline">
                            <ul>
                                <li><a href="##">恋家网质询阿斯达克就爱上看来大家可拉伸的金坷垃圣的金坷垃圣诞节阿喀琉斯简单快乐</a></li>
                                <li><p>阿斯达克就爱上看来大家可拉伸的金坷垃圣诞节阿喀琉斯简单快乐</p></li>
                            </ul>
                        </div>
                    </div>
                </div>    
            </div>
            <div class="tab">
                <div class="lie">
                     <div class="investment_con">
                         
                        <div class="lie-Title">
                            <a href="##"><img src="skin/2016/images/lie-title1.jpg"></a>
                        </div>
                        <div class="lie-outline">
                            <ul>
                                <li><a href="##">恋家网质询阿斯达克就爱上看来大家可拉伸的金坷垃圣的金坷垃圣诞节阿喀琉斯简单快乐</a></li>
                                <li><p>23232323323爱上看来大家可拉伸的金坷垃圣诞节阿喀琉斯简单快乐</p></li>
                            </ul>
                        </div>
                    </div>
                </div>    
            </div>
            <div class="tab">
                <div class="lie">
                     <div class="investment_con">
                         
                        <div class="lie-Title">
                            <a href="##"><img src="skin/2016/images/lie-title1.jpg"></a>
                        </div>
                        <div class="lie-outline">
                            <ul>
                                <li><a href="##">恋家网质询阿斯达克就爱上看来大家可拉伸的金坷垃圣的金坷垃圣诞节阿喀琉斯简单快乐</a></li>
                                <li><p>454545454545来大家可拉伸的金坷垃圣诞节阿喀琉斯简单快乐</p></li>
                            </ul>
                        </div>
                    </div>
                </div>    
            </div>
        </div>
    下面是我写的ｊｑｕｅｒｙ哪里出错了？求指点
      $(".main-lnav li").click(function(e){
    $(this).siblings().removeClass('lgo');
    $(this).addClass('lgo');
    e.stopPropagation();
    //table切换
    $(".tab").siblings().removeClass('xian');
    $(".tab").addClass('xian');
    e.stopPropagation();
});