diff --git a/app/views/features/manage_fields.html.erb b/app/views/features/manage_fields.html.erb
index f57e9ad..8ca86db 100644
--- a/app/views/features/manage_fields.html.erb
+++ b/app/views/features/manage_fields.html.erb
@@ -1,5 +1,7 @@
 <h1><%= _('Manage fields displayed for profiles') %></h1>
 
+<%= javascript_include_tag "manage-fields.js" %>
+
 <% tabs = [] %>
 <% tabs << {:title => _("Person's fields"), :id => 'person-fields',
   :content => (render :partial => 'manage_person_fields')} %>
@@ -11,5 +13,3 @@
 <% end %>
 
 <%= render_tabs(tabs) %>
-
-<%= javascript_include_tag "manage-fields.js" %>
diff --git a/public/javascripts/manage-fields.js b/public/javascripts/manage-fields.js
index 95e254b..9c0b678 100644
--- a/public/javascripts/manage-fields.js
+++ b/public/javascripts/manage-fields.js
@@ -57,7 +57,7 @@ jQuery(document).ready(function(){
       }
 
       var checkbox = jQuery(checkboxes[i+3]).attr("id").split("_")
-      jQuery("#" + checkbox.first() + "_" + checkbox.last()).attr("checked", allchecked)
+      jQuery("#" + checkbox[0] + "_" + checkbox[checkbox.length-1]).attr("checked", allchecked)
     }
   }
 
@@ -74,10 +74,10 @@ jQuery(document).ready(function(){
 
   jQuery("input[type='checkbox']").click(function (){
     var checkbox = jQuery(this).attr("id").split("_")
-    verify_checked(checkbox.first())
+    verify_checked(checkbox[0])
 
     if(this.checked == false) {
-      jQuery("#" + checkbox.first() + "_" + checkbox.last()).attr("checked", false)
+      jQuery("#" + checkbox[0] + "_" + checkbox[checkbox.length-1]).attr("checked", false)
     }
   })
 })
--
libgit2 0.21.2