replaceAll not working

Hi

i have a page with X news, and to i each i have a textarea for writing comments.
Now i want to have eeditor on all textareas, so i use replaceAll();

CKEDITOR.replaceAll();

But when i do this, it only replaces the first to textareas, all the other textareas are hidden.

Live example here:
http://sandbox.potterskolen.dk/news/news.php?id=2

press "X Kommentarer"(X being number of comments) to show the textarea.

Any ideas on why this happens?