fix topbar to work on mobile devices

The topbar, by way of JavaScript, now works
on mobile devices such as cell phones and
tablets.

Internal links for entries from 1984 thru 2015
have been adjusted.

Ran `make www` to perform the above.

TODO: Fix some color issues on topbar.

TODO: More testing!

2014/endoh2/README.md

@@ -42,7 +42,7 @@ Enjoy DNA programming!
   <http://search.cpan.org/~xern/Acme-DoubleHelix-0.01/>
 
 * The synthesized helix just includes the original program at the head.
-  Do you see how [prog.c](prog.c) determines whether it was invoked as a
+  Do you see how [prog.c](%%REPO_URL%%/2014/endoh2/prog.c) determines whether it was invoked as a
   standalone program or included as a header file? Note that it does not use any
   gcc extension such as `__INCLUDE_LEVEL__`.