Sub Menu Pop-Out Direction

I am trying to figure out how to control the direction (right or left) that my sub menus, and sub – sub menus pop-out from my main menu link.

Example: In my main menu bar I have a link named Automotive, under this I have a sub menu named “Service Centers”, under this I have a several sub-sub menus named “Mobil 1, Jiffy Lube, Good Year”. When I hover over my main menu link named “Automotive” the Sub menu pops out to the left, when I hover on the Sub Menu, the Sub-Sub Menu pops out on the right. I want it to pop-out on the left.

Where do I correct this at?

All help would be greatly appreciated!

Thanks,

Shawn