You can clone with
Testing on IE 8 right now I have an error there:https://github.com/fgnass/spin.js/blob/gh-pages/spin.js#L307
IE 8 and before do not support setting opacity value. Instead, you should set a filter, as described there:http://blogs.msdn.com/b/ie/archive/2010/08/17/ie9-opacity-and-alpha.aspx
(note that typeof c.opacity here returns "unknown" and not "undefined" as claimed in the link above)
Looking at the rest of the code, the use of opacity seems to be all over it so I am wondering if this code really works in IE 8 and before..?
This is the opacity attribute of the VML fill-element:http://msdn.microsoft.com/en-us/library/bb229612(v=vs.85).aspx
If it doesn't work for you it's probably because of
a) some other conflicting library on your page or
b) a browser plugin interfering with it.
To verify please view the spin.js homepage in a vanilla IE, for example on http://browserstack.com.
Ok, thanks for the response!
I think my IE is pristine (it's a barebone VM install) but I will test further..