?<div class="ad" id="picBox">
??????? <div class="loading"><img src="images/loading.gif" alt="加載中..." /></div>
??????????? <div class="pic">
??????????????? <li><a href="#"><img src="images/ad2.jpg" thumb="" alt="" text="詳細描述2" /></a></li>
??????????????? <li><a href="#"><img src="images/ad3.jpg" thumb="" alt="" text="詳細描述3" /></a></li>
??????????????? <li><a href="#"><img src="images/ad4.jpg" thumb="" alt="" text="詳細描述4" /></a></li>
??????????? </div>
?? </div>
?? <!-- 焦點結束 -->

.ad {
?? ?overflow: hidden;
?? ?height: 310px;
?? ?
}

放加載圖上一直顯示加載圖，沒放也不顯示焦點圖