http://bugs.winehq.org/show_bug.cgi?id=29574
--- Comment #2 from ocean04@suomi24.fi 2012-01-09 03:56:08 CST --- On that page change "responseText" -> "readyState" and click button "Edit and Click Me"
Now example gives you "2". Seems it's not waiting as it should, readyState should be "4"