不知为啥我的MSDN突然出问题了。里面所有连接都不能使用了。
  
标题下面的连接都成了小方框。正文里的连接只要点击就提示脚本错误。
困扰了好长时间。特郁闷～～～～～～

后来在网上发现了解决方法
To work around this issue, do one of the following, as appropriate to your situation:? Upgrade to Internet Explorer 6.0 Service Pack 1 (SP1) or later. For more information about how to obtain the latest version of Internet Explorer, visit the following Microsoft Web site:
http://www.microsoft/windows/ie/default.mspx (http://www.microsoft/windows/ie/default.mspx)
? Delete the following registry key:
HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Internet Explorer/ActiveX Compatibility/{ADB880A6-D8FF-11CF-9377-00AA003B7A11}
To do so:WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk. 1. Click Start, and then click Run.
2. In the Open box, type regedit, and then click OK.
3. Locate, and then click the following registry key:
HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Internet Explorer/ActiveX Compatibility/{ADB880A6-D8FF-11CF-9377-00AA003B7A11}
4. On the Edit menu, click Delete.
5. When you are prompted to confirm the deletion, click Yes.
6. Quit Registry Editor.

一大串英文。不用头疼。其实就是把HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Internet Explorer/ActiveX Compatibility/{ADB880A6-D8FF-11CF-9377-00AA003B7A11} 删掉就OK了
哈哈