diff -up commons-validator-1.3.1-src/build.xml~ commons-validator-1.3.1-src/build.xml
--- commons-validator-1.3.1-src/build.xml~	2006-11-29 00:31:49.000000000 +0200
+++ commons-validator-1.3.1-src/build.xml	2012-01-14 13:00:24.844856452 +0200
@@ -301,6 +301,7 @@
                doctitle="<h1>${component.title} (Version ${component.version})</h1>"
             windowtitle="${component.title} (Version ${component.version})"
                  bottom="Copyright (c) 2001-2004  Apache Software Foundation"
+                   link="/usr/share/javadoc/java/"
            classpathref="compile.classpath" />
   </target>