[marrone]

I didnt look to closely, but it looks like you are creating a closure around the comments var for your event listener function. The problem is that you are doing this within a loop, meaning the comments var changes after each iteraion, probably ending up in something you hadnt intended

[Xichekolas]

But even if I create an anonymous function that just calls alert(), the click event never fires. i.e. ->

  byId(thisnode.id).addEventListener('click', function(ev) { alert('test'); }, false);

Won't fire either.