说明：  基于JQUERY的横向柱形统计图,模仿QQ的投票统计 代码有详细注释说明！
(The underline two level enterprise website navigation menu is a code based on the jQuery - made mouse slide to the menu bar to display the slide down line and display the two level menu item under the first level menu text. Black atmosphere, there are web pages, about us, company certification, government support, intellectual property, listing service, talent recruitment, contact us and other menu columns.)