Thanks for the help NOP, but I'm still stuck.
I have two lists, and I mapped a button to "switch orientation". When I open MALA, I am greeted with my vertical menu (top is at left, bottom of menu at right of monitor). Now, I press the key to "switch orientation" and and I get the horizontal menu, which is upright (top at top of monitor, bottom at bottom of monitor). But, thanks to no foresight, I need the menu to be upside-down. At this point I can "flip orientation" to get the menu the way I'd like, but when I switch back to the vertical menu it is also flipped (top is at right, bottom is at left of monitor).
Any other suggestions?