--- a/_includes/install.html	Thu Nov 03 15:20:45 2016 +0100
+++ b/_includes/install.html	Fri Nov 04 10:16:27 2016 +0100
@@ -6,7 +6,7 @@
   <li class="tab-title"><a href="#windows">Windows</a></li>
 </ul>
 <div class="tabs-content">
-  <div class="content active" id="linux">
+  <div class="no-js content active" id="linux">
     <p>
       Executable versions of GNU Octave for GNU/Linux systems are provided
       by the individual distributions.  Distributions known to package Octave
@@ -20,7 +20,7 @@
       GNU/Linux distribution varies.
     </p>
   </div>
-  <div class="content" id="mac">
+  <div class="no-js content" id="mac">
     <p>
       The <a href="{{ site.wiki_url }}Octave_for_MacOS_X">Octave Wiki</a>
       has instructions for installing Octave on OS X systems.  Octave may
@@ -30,7 +30,7 @@
       <a href="http://www.finkproject.org">Fink</a>.
     </p>
   </div>
-  <div class="content" id="bsd">
+  <div class="no-js content" id="bsd">
     <p>
       Executable versions of Octave for BSD systems are provided by the
       individual distributions.  Both
@@ -42,13 +42,13 @@
       that process.
     </p>
   </div>
-  <div class="content" id="windows">
+  <div class="no-js content" id="windows">
     <p>
       Windows binaries with corresponding source code can be downloaded
       from <a href="https://ftp.gnu.org/gnu/octave/windows/">https://ftp.gnu.org/gnu/octave/windows/</a>.
     </p>
   </div>
-  <div class="content" id="source">
+  <div class="no-js content" id="source">
     <p>
       The latest released version of Octave is always available from
       <a href="https://ftp.gnu.org/gnu/octave/">https://ftp.gnu.org/gnu/octave/</a>.