title: How do I distinguish between duplicate cookies?
body: <p>I am observing, on both Firefox and IE, that if I have a cookie 'x' on the domain a.b.c.com, and also have a cookie with the same name 'x' on domain a.b.com, then when I look at the value of document.cookie on the a.b.c.com domain, it shows both cookies.  I would like to see just the cookie from the a.b.c.com domain, and not the one from the other domain.  (I'm assuming this occurs because one domain is the same as the other one, with an additional segment on the hostname.)  Is there a way to do this?</p>
  
  <p>I don't have control over the contents of the cookie, and I don't see anything obvious in those contents that distinguishes one domain from the other.</p>