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\r\n \r\n\r\n功能是可能实现的，如图所示，可是当我鼠标移到二级菜单的时候，所有class 是bb 的都会加上on样式。我只要当前二级菜单的上一级菜单的样式变掉，又不想写很多重复的代码每个菜单项都用ID来定义。","title","鼠标移到二级菜单的时候，上一级菜单的样式会改变","last_reply_at","2013-05-18 07:58:45.656","good","top","visit_count",7348,"2013-05-18 07:03:19.973","author",{"_13":14,"_22":23}]