Why in Firefox and Safari, when clicking on a link with a Cyrillic domain, it says that the server was not found?

Question

safari

Hello!
There was such a problem: in Firefox and Safari, when you click on a link with a Cyrillic domain, it says that the server was not found. In Chrome, both Opera and Internet Explorer, this problem is not observed. The link is an image.
Thanks

Answer 1

jsfiddle.net/Anonym/xLTtT/embedded/result
Everything works.
Give an example.