Linux Windows 
 These constants control the scrolling of an object or substring into a
 window. Note, keep them synchronized with IA2ScrollType.
[scriptable, uuid(05cd38b1-94b3-4cdf-8371-3935a9611405)]
interface nsIAccessibleScrollType : nsISupports

Constants

 Scroll the top left of the object or substring to the top left of the
 window (or as close as possible).
const unsigned long SCROLL_TYPE_TOP_LEFT = 0 
 Scroll the bottom right of the object or substring to the bottom right of
 the window (or as close as possible).
const unsigned long SCROLL_TYPE_BOTTOM_RIGHT = 1 
 Scroll the top edge of the object or substring to the top edge of the
 window (or as close as possible).
const unsigned long SCROLL_TYPE_TOP_EDGE = 2 
 Scroll the bottom edge of the object or substring to the bottom edge of
 the window (or as close as possible).
const unsigned long SCROLL_TYPE_BOTTOM_EDGE = 3 
 Scroll the left edge of the object or substring to the left edge of the
 window (or as close as possible).
const unsigned long SCROLL_TYPE_LEFT_EDGE = 4 
 Scroll the right edge of the object or substring to the right edge of the
 window (or as close as possible).
const unsigned long SCROLL_TYPE_RIGHT_EDGE = 5 
 Scroll an object the minimum amount necessary in order for the entire
 frame to be visible (if possible).
const unsigned long SCROLL_TYPE_ANYWHERE = 6