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diff --git a/src/Text/Pandoc/Writers/S5.hs b/src/Text/Pandoc/Writers/S5.hs
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+{-# LANGUAGE CPP, TemplateHaskell #-}
+{-
+Copyright (C) 2006-7 John MacFarlane <jgm@berkeley.edu>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+-}
+
+{- |
+   Module      : Text.Pandoc.Writers.S5
+   Copyright   : Copyright (C) 2006-7 John MacFarlane
+   License     : GNU GPL, version 2 or above 
+
+   Maintainer  : John MacFarlane <jgm@berkeley.edu>
+   Stability   : alpha
+   Portability : portable
+
+Definitions for creation of S5 powerpoint-like HTML.
+(See <http://meyerweb.com/eric/tools/s5/>.)
+-}
+module Text.Pandoc.Writers.S5 (
+                -- * Strings
+                s5Meta,
+                s5Javascript,
+                s5CSS,
+                s5Links,
+                -- * Functions
+                writeS5,
+                writeS5String,
+                insertS5Structure
+                ) where
+import Text.Pandoc.Shared ( WriterOptions )
+import Text.Pandoc.TH ( contentsOf )
+import Text.Pandoc.Writers.HTML ( writeHtml, writeHtmlString )
+import Text.Pandoc.Definition
+import Text.XHtml.Strict
+import System.FilePath ( (</>) )
+import Data.List ( intercalate )
+
+s5Meta :: String
+s5Meta = "<!-- configuration parameters -->\n<meta name=\"defaultView\" content=\"slideshow\" />\n<meta name=\"controlVis\" content=\"hidden\" />\n"
+
+s5Javascript :: String
+#ifndef __HADDOCK__
+s5Javascript = "<script type=\"text/javascript\">\n" ++
+               $(contentsOf $ "data" </> "ui" </> "default" </> "slides.js.comment") ++
+               $(contentsOf $ "data" </> "ui" </> "default" </> "slides.js.packed") ++ "</script>\n" 
+#endif
+
+s5CoreCSS :: String
+#ifndef __HADDOCK__
+s5CoreCSS = $(contentsOf $ "data" </> "ui" </> "default" </> "s5-core.css")
+#endif
+
+s5FramingCSS :: String
+#ifndef __HADDOCK__
+s5FramingCSS = $(contentsOf $ "data" </> "ui" </> "default" </> "framing.css")
+#endif
+
+s5PrettyCSS :: String
+#ifndef __HADDOCK__
+s5PrettyCSS = $(contentsOf $ "data" </> "ui" </> "default" </> "pretty.css")
+#endif
+
+s5OperaCSS :: String
+#ifndef __HADDOCK__
+s5OperaCSS = $(contentsOf $ "data" </> "ui" </> "default" </> "opera.css")
+#endif
+
+s5OutlineCSS :: String
+#ifndef __HADDOCK__
+s5OutlineCSS = $(contentsOf $ "data" </> "ui" </> "default" </> "outline.css")
+#endif
+
+s5PrintCSS :: String
+#ifndef __HADDOCK__
+s5PrintCSS = $(contentsOf $ "data" </> "ui" </> "default" </> "print.css")
+#endif
+
+s5CSS :: String
+s5CSS = "<style type=\"text/css\" media=\"projection\" id=\"slideProj\">\n" ++ s5CoreCSS ++ "\n" ++ s5FramingCSS ++ "\n" ++ s5PrettyCSS ++ "\n</style>\n<style type=\"text/css\" media=\"projection\" id=\"operaFix\">\n" ++ s5OperaCSS ++ "\n</style>\n<style type=\"text/css\" media=\"screen\" id=\"outlineStyle\">\n" ++ s5OutlineCSS ++ "\n</style>\n<style type=\"text/css\" media=\"print\" id=\"slidePrint\">\n" ++ s5PrintCSS ++ "\n</style>\n"
+
+s5Links :: String
+s5Links = "<!-- style sheet links -->\n<link rel=\"stylesheet\" href=\"ui/default/slides.css\" type=\"text/css\" media=\"projection\" id=\"slideProj\" />\n<link rel=\"stylesheet\" href=\"ui/default/outline.css\" type=\"text/css\" media=\"screen\" id=\"outlineStyle\" />\n<link rel=\"stylesheet\" href=\"ui/default/print.css\" type=\"text/css\" media=\"print\" id=\"slidePrint\" />\n<link rel=\"stylesheet\" href=\"ui/default/opera.css\" type=\"text/css\" media=\"projection\" id=\"operaFix\" />\n<!-- S5 JS -->\n<script src=\"ui/default/slides.js\" type=\"text/javascript\"></script>\n"
+
+-- | Converts Pandoc document to an S5 HTML presentation (Html structure).
+writeS5 :: WriterOptions -> Pandoc -> Html
+writeS5 options = (writeHtml options) . insertS5Structure
+
+-- | Converts Pandoc document to an S5 HTML presentation (string).
+writeS5String :: WriterOptions -> Pandoc -> String
+writeS5String options = (writeHtmlString options) . insertS5Structure
+
+-- | Inserts HTML needed for an S5 presentation (e.g. around slides).
+layoutDiv :: [Inline]  -- ^ Title of document (for header or footer)
+          -> String    -- ^ Date of document (for header or footer)
+          -> [Block]   -- ^ List of block elements returned
+layoutDiv title' date = [(RawHtml "<div class=\"layout\">\n<div id=\"controls\"></div>\n<div id=\"currentSlide\"></div>\n<div id=\"header\"></div>\n<div id=\"footer\">\n"), (Header 1 [Str date]), (Header 2 title'), (RawHtml "</div>\n</div>\n")]
+
+presentationStart :: Block
+presentationStart = RawHtml "<div class=\"presentation\">\n\n"
+
+presentationEnd :: Block
+presentationEnd = RawHtml "</div>\n"
+
+slideStart :: Block
+slideStart = RawHtml "<div class=\"slide\">\n"
+
+slideEnd :: Block
+slideEnd = RawHtml "</div>\n"
+
+-- | Returns 'True' if block is a Header 1.
+isH1 :: Block -> Bool
+isH1 (Header 1 _) = True
+isH1 _ = False 
+
+-- | Insert HTML around sections to make individual slides.
+insertSlides :: Bool -> [Block] -> [Block]
+insertSlides beginning blocks = 
+    let (beforeHead, rest) = break isH1 blocks in
+    if (null rest) then 
+        if beginning then
+            beforeHead 
+        else
+            beforeHead ++ [slideEnd]
+    else
+        if beginning then
+            beforeHead ++ 
+            slideStart:(head rest):(insertSlides False (tail rest))
+        else
+            beforeHead ++ 
+            slideEnd:slideStart:(head rest):(insertSlides False (tail rest)) 
+
+-- | Insert blocks into 'Pandoc' for slide structure.
+insertS5Structure :: Pandoc -> Pandoc
+insertS5Structure (Pandoc meta' []) = Pandoc meta' []
+insertS5Structure (Pandoc (Meta title' authors date) blocks) = 
+    let slides     = insertSlides True blocks 
+        firstSlide = if not (null title')
+                        then [slideStart, (Header 1 title'), 
+                              (Header 3 [Str (intercalate ", " authors)]),
+                              (Header 4 [Str date]), slideEnd]
+                        else []
+        newBlocks  = (layoutDiv title' date) ++ presentationStart:firstSlide ++
+                     slides ++ [presentationEnd]
+    in  Pandoc (Meta title' authors date) newBlocks