...

src/calibre/manual/news.rst

@@ -33,6 +33,7 @@ Lets pick a couple of feeds that look interesting:
 I got the URLs by clicking the little orange RSS icon next to each feed name. To make |app| download the feeds and convert them into an e-book, you should click the :guilabel:`Fetch news` button and then the :guilabel:`Add a custom news source` menu item. A dialog similar to that shown below should open up.
 
 .. image:: images/custom_news.png
+    :align: center
 
 First enter ``Portfolio`` into the :guilabel:`Recipe title` field. This will be the title of the e-book that will be created from the articles in the above feeds. 
 
@@ -81,6 +82,7 @@ So it looks like to get the print version, we need to prefix every article URL w
 Now in the :guilabel:`Advanced Mode` of the Custom  news sources dialog, you should see something like (remember to select *The BBC* recipe before switching to advanced mode):
 
 .. image:: images/bbc_advanced.png
+    :align: center
 
 You can see that the fields from the :guilabel:`Basic mode` have been translated to python code in a straightforward manner. We need to add instructions to this recipe to use the print version of the articles. All that's needed is to add the following two lines:
 
@@ -92,6 +94,7 @@ You can see that the fields from the :guilabel:`Basic mode` have been translated
 This is python, so indentation is important. After you've added the lines, it should look like:
 
 .. image:: images/bbc_altered.png
+    :align: center
 
 In the above, ``def print_version(self, url)`` defines a *method* that is called by |app| for every article. ``url`` is the URL of the original article. What ``print_version`` does is take that url and replace it with the new URL that points to the print version of the article. To learn about `python <http://www.python.org>`_ see the `tutorial <http://docs.python.org/tut/>`_.
 
@@ -109,6 +112,7 @@ The recipe now looks like:
 .. _bbc1:
 
 .. image:: images/bbc_altered1.png
+    :align: center
 
 The new version looks pretty good. If you're a perfectionist, you'll want to read the next section, which deals with actually modifying the downloaded content.
 

src/calibre/manual/templates/layout.html

@@ -31,7 +31,7 @@
       {%- endif %}
         <div class="body">
             {% if not embedded %}
-            <div id="ad-container">
+            <div id="ad-container" style="text-align:center">
                     <script type="text/javascript"><!--
                         google_ad_client = "ca-pub-2595272032872519";
                         /* User Manual horizontal */

src/calibre/manual/viewer.rst

@@ -66,6 +66,7 @@ reference mode. You can turn it on by clicking the Reference Mode button |refmi|
 mouse over a paragraph, calibre will display a unique number made up of the section and paragraph numbers. 
 
 .. image:: images/ref_mode.png
+    :align: center
 
 You can use this number to unambiguously refer to parts of the books when discussing it with friends or referring to it
 in other works. You can enter these numbers in the box marked Go to at the top of the window to go to a particular