diff -r d64ffbd7d8c6 -r 98a495a50e49 titlegen.py
--- a/titlegen.py	Fri Oct 31 21:00:25 2008 +0000
+++ b/titlegen.py	Sat Nov 01 08:07:55 2008 +0000
@@ -56,9 +56,15 @@
                                                format_sec(ind[sec][0]),gr[4]))
             elif gr[2]:
                 prev_page=ind[page][1]
-                prev_str= ( '\\ref '+prev_page ) if prev_page else ''
+                if prev_page:
+                    prev_str= ( '\\ref '+prev_page )
+                else:
+                    prev_str=''
                 next_page=ind[page][2]
-                next_str= ( '\\ref '+next_page ) if next_page else ''
+                if next_page:
+                    next_str= ( '\\ref '+next_page )
+                else:
+                    next_str=''
                 fo.write('<< %s | \\ref toc "Home" | %s >>\n'%\
                              (prev_str,next_str))
             elif gr[3]: