The introduction of Accesskey settings：
- Accesskey H: Upper Area, including Chinese official website link, Site Map, Home and main menu link.
- Accesskey C: Middle Area, displaying the main contents of the web page.
- Accesskey L: Left Area, including the next level menu of the web page.
- Accesskey F: Below Area, including related links and campus information.
- Note：IE Accesskey use with Alt；chrome Accesskey uses with Ctrl + Alt；FireFox Accesskey uses with Shift + Alt