function left() {
			var parentRole = getParentRole();

			if (parentRole == "tablist") {
				moveFocus(-1, getFocusElements(focusedElement.parentNode));
			} else if (focusedControl.parent().submenu) {
				cancel();
			} else {
				moveFocus(-1);
			}
		}
Moves the focus to the left this is called by the left key.

@private