我有如下结构：

<div id='skyscraper_flash'>
<!--this id skyscraper_flash is position absolute-->
  <object>
   <!--this is wmode transparent-->
  </object>
</div>

<div id='menu'>
<!--this id menu is also position absolute-->
  <ul>
    <li>foo</li>
    <li>bar</li>
  </ul>
</div>

现在,菜单的最后一项打开,它显示在Flash内容后面.摩天大楼位于页面内容的右侧.我该怎么看？