Threaded reply form JS does not work

[r-a-y]

Turn on threaded replies.

Next, visit a forum thread with at least two posts.

When you click on the "Reply" link for the second post, the following JS error occurs:

Not enough arguments to Node.insertBefore.

Attached patch fixes this by switching reply.parentNode.insertBefore(respond); to reply.parentNode.appendChild(respond);

Now the threaded reply form correctly shows up just beneath the forum post.

Tested on 2.5.10 and 2.6-trunk.

If the reply form should show up before the forum post, let me know and I'll repatch.