I also posted an example online. It it exported from the file s5- 
test.org with the function defined in the attached file. The css is  
very slightly modified.
The "scientific content" of the talk is incomplete, this is normal :-/

http://homepages.ulb.ac.be/~pdebuyl/lectures/s5-test.html
http://homepages.ulb.ac.be/~pdebuyl/lectures/s5-test.org

For those reading, I'll mention that using the html export, as done  
here, allows to include syntax-highlighted code and LaTeX equations  
very easily.

Regards,

Pierre

Le 1 juin 11 à 18:41, Eric Schulte a écrit :

> Hi Pierre,
>
> I've taken your very thorough S5 instructions and converted them  
> into a
> single `org-export-as-s5' function.  The attached archive file  
> holds an
> s5.org Org-mode file which defines this function, as well as the ui
> directory required for S5, and an html file which results from calling
> the `org-export-as-s5' function in the s5.org file.
>
> For now the results are also posted up at
> http://cs.unm.edu/~eschulte/notes/s5/s5.org
> http://cs.unm.edu/~eschulte/notes/s5/s5.html
>
> Thanks for the clear explanation which lead to such an easy  
> translation
> into elisp.  Please let me know if you think this should be  
> augmented in
> any way, or if the defined function throws any errors on your system.
>
> Best -- Eric
>
> <s5.tar.bz2>
> Pierre de Buyl <pdebuyl@ulb.ac.be> writes:
>
>> Hello,
>>
>> After a lot a reading of org-exp.el and org-html.el I finally figured
>> out the
>> existence of the "HTML_CONTAINER_CLASS" property.
>>
>> I could then figure a minimal way to make a s5 presentation.
>> Minimal in the sens of minimum difference with the html exporter.
>>
>> After setting a few STYLE and OPTIONS lines in an org file,
>> three steps are needed:
>> 1. Set the HTML_CONTAINER_CLASS to "slide" on level 1 headings
>> 2. Set org-export-html-toplevel-hlevel to "1", so that slide titles
>> behave properly
>> 3. Replace in the html output
>> <div id="content">
>> by
>> <div class="layout">
>> <div id="controls"><!-- DO NOT EDIT --></div>
>> <div id="currentSlide"><!-- DO NOT EDIT --></div>
>> <div id="header"></div>
>> <div id="footer">
>> <h1>Interactive Python plotting</h1>
>> </div>
>> </div>
>>
>> <div class="presentation">
>>
>> You need the "ui" directory from the S5 archive to make it work
>> indeed, http://meyerweb.com/eric/tools/s5/ .
>> I attach an example org file and the resulting html (which was  
>> tweaked
>> according to step 3).
>>
>> Pierre
>>
>>
>>
>>
>>
>> Le 3 févr. 11 à 12:23, Bastien a écrit :
>>
>>> Hi Pierre,
>>>
>>> Pierre de Buyl <pdebuyl@chem.utoronto.ca> writes:
>>>
>>>> S5 allows one to present a slideshow in a web browser, even full
>>>> screen for
>>>> some browsers.
>>>> I know that the topic has come here already, but I actually hacked
>>>> the
>>>> excellent org-html.el export file to produde a S5 slideshow with  
>>>> org.
>>>
>>> This looks useful.
>>>
>>> By reading your code, I see org-export-as-s5 is a variation over
>>> org-export-as-html.
>>>
>>> I would welcome an approach where we factor out some elements of
>>> org-export-as-html, so that exporting to s5 would just require the
>>> user to customize those elements.
>>>
>>> Does that seem reasonable to you?  Would you volunteer to make
>>> org-export-as-html a bit more general?  Even a precise comparison
>>> of org-export-as-s5 against org-export-as-html would be helpful at
>>> this point.
>>>
>>> Thanks!
>>>
>>> -- 
>>>  Bastien
>>
>
> -- 
> Eric Schulte
> http://cs.unm.edu/~eschulte/