From f12fc4c23e748e742d7676804abea424bdd9e0ad Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Thu, 5 Jan 2012 20:48:13 +0530
Subject: [PATCH] ...

---
 src/calibre/ebooks/oeb/display/cfi.coffee | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/calibre/ebooks/oeb/display/cfi.coffee b/src/calibre/ebooks/oeb/display/cfi.coffee
index 7afaf5523d..a03dd49c0a 100644
--- a/src/calibre/ebooks/oeb/display/cfi.coffee
+++ b/src/calibre/ebooks/oeb/display/cfi.coffee
@@ -76,7 +76,9 @@ viewport_to_document = (x, y, doc) -> # {{{
         # We are in a frame
         node = win.frameElement
         rect = node.getBoundingClientRect()
-        return viewport_to_document(rect.left, rect.top, node.ownerDocument)
+        [vx, vy] = viewport_to_document(rect.left, rect.top, node.ownerDocument)
+        x += vx
+        y += vy
     return [x, y]
 # }}}