IE8 property name test

I get this error from IE8: Webpage error details User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0) Timestamp: Mon, 21 Jan 2013 23:11:52 UTC Message: Expected identifier Line: 11 Char: 25 Code: 0 URI: file:///C:/Documents%20and%20Settings/Administrator/My%20Documents/ie8PropertyNameTest.html

JavaScript

var stuff = {
  "foo": {
    "new": 42
  }
};
var thing = stuff.foo.new;