title: Having difficulty using IE Javascript leak detectors
body: <p>Microsoft's IE6 and IE7 browsers suffer from memory leaks when certain Javascript code patterns are used.  I've found lots of information on what the leak patterns were, back in early IE6 days.  However, I understand that many (but not all) of these were fixed in IE7 and in a service pack for IE6.  I can't find a reliable source of information on what leaks still remain in those patched versions of IE6 and IE7.</p>
  
  <p>There are a couple of tools to detect leak patterns.  But I can't seem to be able to use them the way I want!</p>
  
  <ul>
  <li><p>Microsoft's (V2) memory leak detector finds no leaks at all in my code even when I use patterns that should leak.  This may be because I am running IE8 - is there any non-headachy way to get it to pretend to be IE6 or IE7?</p></li>
  <li><p>Drip and sIEve seem to find tons of leaks of the "orphan" variety.  Surely these must be false positives - virtually every element I add to the document then remove again are listed, and I don't believe I keep references to them.  And if they are real, how can I find where in my code they are leaking?  The tools have a 'properties' feature which shows nothing, making it seem broken.  Again, I have no idea whether these leaks are relevant for IE6 or IE7, or just for IE8, which is the version of IE I have installed.</p></li>
  </ul>
  
  <p>So I'd really like to know what types of memory leaks are still an issue with patched versions of IE6 and IE7, and how to effectively find them in my live code using tools to help me.</p>
  
  <p>Any help?</p>