Hide New posts block until the user clicks on display
 

Just see my pic

Thank you for the picture, unfortunately what you are asking is not very clear. What display button?

There is no button, I think he wants to know how to do it all together. :)

That makes more sense, but still he needs to explain if he is just talking about the forum title and description or the entire row -- for a single forum or for all of them. I partially see a need for what he is doing, the total concept however is not clear.

In general, it is always nice to know their reasoning for the request, it helps to fill in the missing questions. :)