I don't know if there's some function to check a window's position, I mean is it currently sitting at bottom or top, left or right??
__________________________
| | |
| | |
| left | right |
| | |
| | |
|___________|____________|
__________________________
| |
| top |
|________________________|
| |
| bottom |
|_______________________ |
ctrl-W_L
? (orctrl-W_R
)