Can't comment?

Question

Habr

I have a problem and it is fully rendered in the header. I can't write comments. I created a post, but I can not answer questions that are asked. Did I break something? Help, who can. In fact: I do not have active "write" and "preview" buttons. Worth Firefox 3.6. Tried on Chrome. Uselessly.
Comments are not written to posts. Everything is fine with the answers in q&a.

Answer 1

The buttons become active when you type text. Maybe it's a JS issue in your browser.
In general, habrahabr.ru/feedback/ .

Answer 2

Member of the IT community with Firefox 3.6? :)

Answer 3

When dialing, nothing. Thank you for your response.