The green box refers to two different setTimeout calls, one of which has a "code" argument the other has "handler".  The IDL only has a "handler" version, though.

Also, the description of how to "get the timeout" doesn't seem to match implementations.  http://people.mozilla.org/~cmccormack/tests/timer-timeout.html shows "ToNumber(timeout)" for Firefox, Safari, Chrome, Opera and IE.  So we should be able to just use floats for the timeouts.

So maybe we can write it as:

interface WindowTimers {
  long setTimeout(in Function handler, in optional float timeout, in any... args);
  long setTimeout([AllowAny] in DOMString code, in optional float timeout, in any... args);
  void clearTimeout(in long handle);
  long setInterval(in Function handler, in optional float timeout, in any... args);
  long setInterval([AllowAny] in DOMString code, in optional float timeout, in any... args);
  void clearInterval(in long handle);
};

and then simplify the "get the timeout" steps.