They used an image to do the triangle.
I'm assuming the post , but do not know if he's wanting toNo problem.
I understand, what is your native language?
What is it that you would like to hide / display when you click on the triangle?
http://xenforo.com/community/resources/toggleme.137/ work for you? I don't think it does individual threads (as that would be kinda pointless).Thanks Tracy Perry,
XenForo can do this