collapse/shorten very long code pastes in the forum / wiki

At least in the forum it is IMHO desiderable to somehow have a way to collapse/shorten very long code pastes (10+ lines), possibly with a div with a fixed height and "overflow: scroll" or similar, and optionally unroll/collapse each code block with a small button or text. This should dramatically increase the readability of forum threads.

I'm not sure if it's useful on the wiki as well, but I'd say yes.

Here's the forum thread:
http://developer.qt.nokia.com/forums/viewthread/3256/