ul li position

<table>
  <td class="imglistbox">
    <ul>
      <li><img src="/img/site/temp/simg1.jpg" alt=""/></li>
      <li><img src="/img/site/temp/simg2.jpg" alt=""/></li>
      <li><img src="/img/site/temp/simg3.jpg" alt=""/></li>
      <li><img src="/img/site/temp/simg4.jpg" alt=""/></li>
     </ul>
  </td>
</table>

ul{position:relative;margin-top: -40px;z-index:3;} 

ul li{float:left;width:68px;height:40px;overflow:hidden;border:3px solid #fff;margin-left:10px;border-radius:3px;z-index:4;}