[O] problems with mathjax CDN and HTML export

[Giovanni Ridolfi]

Hello everybody,

I have a problem with HTML export and Mathjax.

On the Mathjax site it is written that:" 
There are two ways to access MathJax: the easiest way is to use the copy
of MathJax available  from our distributed network service at
cdn.mathjax.org,  

[and some lines below: "We recommend using the CDN service"]

but you can also download and install a copy of MathJax on your own server, 
or for use locally on your own hard disk (with no need for network access)."

So I went for the CDN service.
Incidentally, if it worked, we could drop the
http://orgmode.org/mathjax/MathJax.js  support.

In the section "Putting mathematics in a web page" of the 
[[http://www.mathjax.org/docs/1.1/start.html#putting-mathematics-in-a-web-page][Mathjax
 documentation]]

it is written that: "To put mathematics in your web page, you can use
either  TeX and LaTeX notation or MathML notation or both within the
same page;" 

and this is done putting two scripts in the html file[1] 


"The default math delimiters are $$...$$ and \[...\] for displayed
mathematics, and \(...\) for in-line mathematics."

Now if I try to export to HTML the following file 
--------------------------------------
  -*- mode: org -*-
* mathjax test
:PROPERTIES:
:EXPORT_TITLE:
:EXPORT_FILE_NAME: 000000-bbbbb.html
:EXPORT_OPTIONS:  H:3 num:nil toc:nil \n:t @:t ::t |:t ^:t f:nil *:t tags:nil 
TeX:t LaTeX:nil skip:t p:nil  author:nil  email:nil  creator:nil timestamp:t
:END:
#+STYLE: <script type="text/x-mathjax-config"> MathJax.Hub.Config({   tex2jax: 
{inlineMath: [['$','$'], ['\\(','\\)']]} }); </script>
#+STYLE: <script type="text/javascript"  
src="https://d3eoax9i5htok0.cloudfront.net/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML";>
 </script>
#+MATHJAX: align:"left" mathml:t 
path:"https://d3eoax9i5htok0.cloudfront.net/mathjax/latest/MathJax.js";
** Test
***  $$
$$
\alpha = \frac{1}{L_{0}} \left( \frac{L_2-L_1}{T_2-T_1} \right) 
= \frac{1}{L_0}\frac{\Delta L}{\Delta T}
$$
*** @$$
@$$
\alpha = \frac{1}{L_{0}} \left( \frac{L_2-L_1}{T_2-T_1} \right) 
= \frac{1}{L_0}\frac{\Delta L}{\Delta T}
@$$
#+END_SRC
*** #+BEGIN_HTML
#+BEGIN_HTML
$$
\alpha = \frac{1}{L_{0}} \left( \frac{L_2-L_1}{T_2-T_1} \right) 
= \frac{1}{L_0}\frac{\Delta L}{\Delta T}
$$
#+END_HTML
*** nothing
u(\alpha) = \delta\alpha =  {
\Bigg(
\left[\frac{-(\Delta L+c)}{L_{0}\cdot (T_1 -T_0)^{2}} \delta T_1 \right]^2 +
---------------------------------------------------------------------------------------------

the math snippets are always "converted" in HTML format e.g.: &alpha; = 
\frac{1}{L<sub>0</sub>} 
:-(
unless they're inside the #+BEGIN_HTML block.

Is there another way to tell the HTML exporter to copy verbatim the lines 
inside the 
math delimiters? 

cheers,
Giovanni

[1]
<script type="text/x-mathjax-config"> MathJax.Hub.Config({   tex2jax: 
{inlineMath: [['$','$'], ['\\(','\\)']]} }); </script>
<script type="text/javascript"  
src="https://d3eoax9i5htok0.cloudfront.net/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML";>
 </script>

C-h v  org-export-html-mathjax-options :

org-export-html-mathjax-options is a variable defined in `org-html.el'.
Its value is ((path "http://orgmode.org/mathjax/MathJax.js";)
 (scale "100")
 (align "center")
 (indent "2em")
 (mathml nil))