swaping buffers

[dydimustk]

I want to be able to quickly swap between the two open buffers I am
working on, while keeping the screen dimensions. I usually keep a
little buffer open at the bottom of the screen with erc running, and
I'm working in the top part.

____________
|                          |
|                          |
|                          |
|===========|
|-------------------|

I want to be able to just swap the top and bottom buffer, while keeping
the screen layout the same. Does anyone know if this is possible?