Index: templates/log.cs
===================================================================
--- templates/log.cs    (revision 3239)
+++ templates/log.cs    (working copy)
@@ -77,7 +77,7 @@
   </div>
  </div>

- <form action="<?cs var:log.changeset_href ?>" method="get">
+ <form action="<?cs var:log.changeset_href ?>" method="get" class="printableform">
   <div class="buttons"><input type="submit" value="View changes"
        title="Diff from Old Revision to New Revision (select them below)" />
  </div>
Index: htdocs/css/trac.css
===================================================================
--- htdocs/css/trac.css (revision 3239)
+++ htdocs/css/trac.css (working copy)
@@ -386,4 +386,5 @@
 @media print {
  #header, #altlinks, #footer, #help { display: none }
  .nav, form, .buttons form { display: none }
+ form.printableform { display: block }
 }