比如product/nav_4_6.aspx，下次访问的时间自动成nav_4_6.aspx这个页面了，如果在后台文件加上product/nav_4_6.aspx，变成product/product/nav_4_6.aspx，下拉菜单，测试网站，cqaoc.meibu.com
Server Error in '/' Application.
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The resource cannot be found.
Description: HTTP 404. The resource you are looking for (or one of its dependencies) could have been removed, had its name changed, or is temporarily unavailable. Please review the following URL and make sure that it is spelled correctly.
Requested URL: /nav_4_6.aspx
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Version Information: Microsoft .NET Framework Version:2.0.50727.42; ASP.NET Version:2.0.50727.42
