   'twitter.com': 'div.permalink-container div.permalink[role=main]'
   'reddit.com': '#overlayScrollContainer'
   'new.reddit.com': '#overlayScrollContainer'
+  'mail.google.com': 'table[role="presentation"]'
 
 root = exports ? (window.root ?= {})
 root.Scroller = Scroller


# From element and its parents, find the first which we should scroll and which does scroll.
findScrollableElement = (element, direction, amount, factor) ->
  while element != getScrollingElement() and not isScrollableElement element, direction, amount, factor
    element = DomUtils.getContainingElement(element) ? getScrollingElement()
  element

# On some pages, the scrolling element is not actually scrollable.  Here, we search the document for the

    if doesScroll(scrollingElement, "y", 1, 1) or doesScroll(scrollingElement, "y", -1, 1)
      return scrollingElement
    else
      element = getScrollingElement() ? document.body

  if doesScroll(element, "y", 1, 1) or doesScroll(element, "y", -1, 1)
    element
