Intro Js not working on IE8. is there a workaround?

http://usablica.github.io/intro.js/

This is the demo page In IE I get

Webpage error details:

User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E) Timestamp: Tue, 18 Nov 2014 07:48:40 UTC

Message:

Can't move focus to the control because it is invisible, not enabled, or of a type
that does not accept the focus.
  Line: 932
  Char: 5
  Code: 0
  URI: http://usablica.github.io/intro.js/intro.js?v=060

any help?

链接地址: http://www.djcxy.com/p/51920.html

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