Incomplete display of new thread

[613038475]

I notice a style error cause incomplete display of new thread.
The reason is ".forum-container .forum-new-thread" has style "position: absolute", so it wont auto expand it's parent element,
when height of this element large than 500 (.forum-container min-height), the over part will not visible.

There about 3 solutions

1. set "min-height" of ".forum-container" to 650
2. use "display: none" instead of "left: -110%" (no animation)
3. hide ".forum-topics" then set "position: relative" in click event of ".new-thread" (unstable)
   I'm not sure which solution should take.

Picture, browser is firefox 30.