Index: app/views/issues/show.html.erb
===================================================================
--- app/views/issues/show.html.erb	(revision 14622)
+++ app/views/issues/show.html.erb	(working copy)
@@ -120,7 +120,12 @@
 
 <% if @journals.present? %>
 <div id="history">
+<div id="history-header">
 <h3><%=l(:label_history)%></h3>
+<% if @journals.detect {|j| ! j.details.empty?} %>
+  <%= check_box_tag 'show_notes_only', 1, false, {onclick: "toggleJournalDetails(this)"} %><%= label_tag 'show_notes_only', l(:label_show_notes_only) %>
+<% end %>
+</div>
 <%= render :partial => 'history', :locals => { :issue => @issue, :journals => @journals } %>
 </div>
 <% end %>
Index: config/locales/en.yml
===================================================================
--- config/locales/en.yml	(revision 14622)
+++ config/locales/en.yml	(working copy)
@@ -971,6 +971,7 @@
   label_fields_mapping: Fields mapping
   label_file_content_preview: File content preview
   label_create_missing_values: Create missing values
+  label_show_notes_only: Show notes only
 
   button_login: Login
   button_submit: Submit
Index: public/javascripts/application.js
===================================================================
--- public/javascripts/application.js	(revision 14622)
+++ public/javascripts/application.js	(working copy)
@@ -650,6 +650,16 @@
   toggleDisabledInit();
 });
 
+function toggleJournalDetails(el) {
+  var checked = $(el).is(':checked');
+  details = $('.journal:not(.has-notes), .journal .details');
+  if (checked) {
+    details.hide();
+  } else {
+    details.show();
+  }
+}
+
 $(document).ready(setupAjaxIndicator);
 $(document).ready(hideOnLoad);
 $(document).ready(addFormObserversForDoubleSubmit);
Index: public/stylesheets/application.css
===================================================================
--- public/stylesheets/application.css	(revision 14622)
+++ public/stylesheets/application.css	(working copy)
@@ -375,6 +375,9 @@
 div#issue-changesets div.changeset { border-bottom: 1px solid #ddd; }
 div#issue-changesets p { margin-top: 0; margin-bottom: 1em;}
 
+div#history-header { margin: 8px 0 15px; }
+div#history-header h3 { display: inline; }
+
 .journal ul.details img {margin:0 0 -3px 4px;}
 div.journal {overflow:auto;}
 div.journal.private-notes {border-left:2px solid #d22; padding-left:4px; margin-left:-6px;}