页面的head部分，先设置要页面各元素的样式，代码如下：

body{background-color: #161616}
body,ul,li,p {margin: 0;padding: 0}
ul,ol {list-style: none;}
.home-subjects-v2{height:128px;border-radius:3px;-moz-border-radius:3px;-webkit-border-radius:3px;border:1px solid #d3d3d3;border-color:rgba(0,0,0,.12);overflow:hidden;width:938px;margin-top:12px;background:#fff}
.home-subjects-v2 ul{width:1000px}
.home-subjects-v2 li{width:156px;height:128px;float:left;overflow:hidden;-webkit-transition:all .1s linear;-moz-transition:all .1s linear;-o-transition:all .1s linear;-ms-transition:all .1s linear;transition:all .1s linear}
.home-subjects-v2 li *{-webkit-transition:all .1s linear;-moz-transition:all .1s linear;-o-transition:all .1s linear;-ms-transition:all .1s linear;transition:all .1s linear}
.home-subjects-v2 li a{width:156px;height:128px;display:block;position:relative;cursor:pointer;text-decoration:none;overflow:hidden}
.home-subjects-v2 li a:hover{position:absolute}
.home-subjects-v2 li a:hover .mask{-ms-filter:"alpha(Opacity=0)";filter:alpha(opacity=0);opacity:0;-webkit-transition:opacity .2s ease-in;-moz-transition:opacity .2s ease-in;-o-transition:opacity .2s ease-in;-ms-transition:opacity .2s ease-in;transition:opacity .2s ease-in}
.home-subjects-v2 li img{height:72px;width:117px;position:absolute;bottom:0;right:-13px}
.home-subjects-v2 li .line{height:128px;width:0;font-size:0;border-right:1px dashed #cacaca;position:absolute;right:0;top:4px}
.home-subjects-v2 li .info{position:absolute;top:0;left:0;width:136px;padding:4px 10px}
.home-subjects-v2 li .info h3{font-size:14px;font-weight:700}
.home-subjects-v2 li .info p{color:#868686;font-size:12px;overflow:hidden;width:136px;height:22px;line-height:22px}
.home-subjects-v2 li .info p.price{font-size:14px;font-style:italic;color:#fa2a5d;height:35px}
.home-subjects-v2 li .info p.price strong{font-size:22px;font-family:Arial;padding-right:2px}
.home-subjects-v2 li .info p.price i{font-size:14px}
.home-subjects-v2 li .info p.more{display:none}
.home-subjects-v2 .mask{height:128px;width:156px;display:block;position:absolute;top:0;left:0;background:#000;-ms-filter:"alpha(Opacity=0)";filter:alpha(opacity=0);opacity:0;-webkit-transition:opacity .2s ease-in;-moz-transition:opacity .2s ease-in;-o-transition:opacity .2s ease-in;-ms-transition:opacity .2s ease-in;transition:opacity .2s ease-in;_display:none!important}
.home-subjects-v2 .big{width:314px}
.home-subjects-v2 .big a{width:314px}
.home-subjects-v2 .big img{width:195px;height:120px;right:0;bottom:0}
.home-subjects-v2 .big .info{width:294px}
.home-subjects-v2 .big .info h3{font-size:18px}
.home-subjects-v2 .big .info p{font-size:14px;width:166px}
.home-subjects-v2 .big .info p.price{font-size:16px;padding-top:7px}
.home-subjects-v2 .big .info p.price strong{font-size:28px}
.home-subjects-v2 .big .info p.price i{font-size:16px}
.home-subjects-v2 .big .info p.more{display:block;font-size:12px;color:#ff2a5b}
.home-subjects-v2 .big .mask{width:314px}
.home-subjects-v2:hover .mask{-ms-filter:"alpha(Opacity=75)";filter:alpha(opacity=75);opacity:.75;-webkit-transition:opacity .2s ease-in;-moz-transition:opacity .2s ease-in;-o-transition:opacity .2s ease-in;-ms-transition:opacity .2s ease-in;transition:opacity .2s ease-in}

接着引入jQuery库，代码如下：

<script src="js/jquery.min.js"></script>

页面的body部分，用了多个li标签放置不同的商品展示图片，代码如下：

<div id="subject" class="home-subjects-v2">
<ul>
<li>
    <a>
        <img src="img/a1.jpg">
        <div class="info">
        <h3 style="color:#f62368">聚美妆</h3>
        <p>聚美妆1/2周年庆</p>
        <p class="price"><strong>1</strong><i>折起</i></p>
      	<p class="more">进入专题抢购 &gt; </p>
        </div>
        <s class="line"></s>
        <i class="mask"></i>
    </a>
</li>
<li class="big">
    <a>
        <img src="img/a2.jpg">
        <div class="info">
        <h3 style="color:#ff578a">Baby购</h3>
        <p>宝宝该换装了，新品抢购</p>
        <p class="price"><strong>2.5</strong><i>折起</i></p>
      	<p class="more">进入专题抢购 &gt; </p>
        </div>
        <s class="line"></s>    <i class="mask"></i>
    </a>
</li>
<li>
    <a>
        <img src="img/a3.jpg">
        <div class="info">
        <h3 style="color:#6d3fa7">时装团</h3>
        <p>时尚春装，清新小潮搭配</p>
        <p class="price"><strong>1</strong><i>折起</i></p>
      	<p class="more">进入专题抢购 &gt; </p>
        </div>
        <s class="line"></s>    <i class="mask"></i>
    </a>
</li>
<li>
    <a>
        <img src="img/a4.jpg">
        <div class="info">
        <h3 style="color:#d61939">TV购</h3>
        <p>补血养颜 就这么简单</p>
        <p class="price"><strong>2.6</strong><i>折起</i></p>
      	<p class="more">进入专题抢购 &gt; </p>
        </div>
        <s class="line"></s><i class="mask"></i>
    </a>
</li>
<li>
    <a>
        <img src="img/a5.jpg">
        <div class="info">
        <h3 style="color:#6f9400">聚新鲜</h3>
        <p>最纯正的泰国香米</p>
        <p class="price"><strong>5</strong><i>折起</i></p>
      	<p class="more">进入专题抢购 &gt; </p>
        </div>
        <i class="mask"></i>
    </a>
</li>
</ul>
</div>

页面的底部，设置好鼠标滑入等事件的响应即可，代码如下：

<script type="text/javascript">
function mouseover(e){
    var list = $('#subject li');
    var target = $(e.target).parents('li');

    list.removeClass('big');
    target.addClass('big');
}

(function(){
    var outer = $('#subject');
    outer.find('li').on('mouseover', mouseover);
})()
</script>