让同一个class自动在li里按顺序跳转

求让下面的gavinPlay自动跳转到下一个li里，顺序往下跳，循环播放
<div class="top_index ">
<ul>
<li class="photo-container fl li1 gavinPlay">
<a href="index.php" class="rotate-box"></a>
</li>
<li class="photo-container fl li2">
<a href="index.php?c=article&a=type&tid=148" class="rotate-box"></a>
</li>
<li class="photo-container fl li3">
<a href="index.php?c=article&a=type&tid=149" class="rotate-box"></a>
</li>
<li class="photo-container fl li4">
<a href="index.php?c=article&a=type&tid=150" class="rotate-box"></a>
</li>
<li class="photo-container fl li5">
<a href="index.php?c=article&a=type&tid=151" class="rotate-box"></a>
</li>
<div class="clear"></div>
</ul>
</div>