哪位高手知道这个效果是怎么做的,最好给出代码
http://msdn2.microsoft.com/zh-cn/bb188199.aspx
微软的MSDN网站上   左上脚的菜单   鼠标放上去以后动态出的DIV效果   感觉很漂亮     把它的静态页面和CSS都下载下来   但是还是找不到实现的方法~     看代码中这里又没有用到JS   各位高手是否有了解的~   最好有代码能看看~

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JavaScript
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up
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<div class= "LocaleManagementFlyoutStatic_msdn " style= "position: relative; " id= "ctl00$LocaleManagement$ctl00 "> <a class= "LocaleManagementFlyoutStaticLink_msdn " href= "javascript:void(0) "> 中国 - 简体中文&nbsp; </a> <img class= "LocaleManagementFlyoutPopArrow " src= "/msdn/Controls/LocaleManagementFlyout/zh-cn/popdownarrow-msdn-right.gif " style= "border-width: 0px; height: 4px; width: 7px; "> <div id= "ctl00$LocaleManagement$ctl00_Popup " class= "LocaleManagementFlyoutPopup " style= "position: absolute; visibility: hidden; left: -65534px; ">
<table style= "width: 175px; " border= "0 ">
<tbody> <tr>
<td> <a href= "javascript:__doPostBack( 'ctl00$LocaleManagement$ctl00$ctl05 ', ' ') "> Argentina (Espa&#241;ol) </a> </td>
</tr> <tr>
<td> <a href= "javascript:__doPostBack( 'ctl00$LocaleManagement$ctl00$ctl06 ', ' ') "> Australia (English) </a> </td>
</tr> <tr>

<td> <a href= "javascript:__doPostBack( 'ctl00$LocaleManagement$ctl00$ctl07 ', ' ') "> Brasil (Portugués) </a> </td>
</tr> <tr>
<td> <a href= "javascript:__doPostBack( 'ctl00$LocaleManagement$ctl00$ctl08 ', ' ') "> Canada (English) </a> </td>
</tr> <tr>
<td> <a href= "javascript:__doPostBack( 'ctl00$LocaleManagement$ctl00$ctl09 ', ' ') "> Canada (Fran&#231;ais) </a> </td>
</tr> <tr>
<td> <a href= "javascript:__doPostBack( 'ctl00$LocaleManagement$ctl00$ctl10 ', ' ') "> 中国 (简体中文) </a> </td>

</tr> <tr>
<td> <a href= "javascript:__doPostBack( 'ctl00$LocaleManagement$ctl00$ctl11 ', ' ') "> Colombia (Espa&#241;ol) </a> </td>
</tr> <tr>
<td> <a href= "javascript:__doPostBack( 'ctl00$LocaleManagement$ctl00$ctl12 ', ' ') "> Deutschland (Deutsch) </a> </td>
</tr> <tr>
<td> <a href= "javascript:__doPostBack( 'ctl00$LocaleManagement$ctl00$ctl13 ', ' ') "> Espa&#241;a (Espa&#241;ol) </a> </td>
</tr> <tr>

<td> <a href= "javascript:__doPostBack( 'ctl00$LocaleManagement$ctl00$ctl14 ', ' ') "> France (Fran&#231;ais) </a> </td>
</tr> <tr>
<td> <a href= "javascript:__doPostBack( 'ctl00$LocaleManagement$ctl00$ctl15 ', ' ') "> India (English) </a> </td>
</tr> <tr>
<td> <a href= "javascript:__doPostBack( 'ctl00$LocaleManagement$ctl00$ctl16 ', ' ') "> México (Espa&#241;ol) </a> </td>
</tr> <tr>