哪位高手能实现这样的菜单

谁能实现这样的菜单
http://www.lucreebay.com/index.asp

就是左边那个分类菜单

------解决方案--------------------
你要实现什么？层跟随移动？MSN检测在线？
------解决方案--------------------
是不是和www.jw112.com顶部的菜单加播放效果?

如果是,我可以提供 www.jw112.com 顶部菜单的代码.
------解决方案--------------------
<script type= "text/javascript " language= "JavaScript1.2 " src= "http://www.lucreebay.com/Images/stm31.js "> </script>
<script type= "text/javascript " language= "JavaScript1.2 ">
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