diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -107,16 +107,11 @@
     end
   end
 
-  def problem_select(problems, options = {})
-    prefix = options[:with_specific_in_header] ? [[(t 'main.specified_in_header'),'-1']] : []
-    selected = options[:selected] || (options[:with_specific_in_header] ? -1 : nil)
-    puts "selected =  #{selected} hehe"
-    html_options = {class: 'select2 form-control'}
-    html_options[:id] = options[:id]if options[:id]
-    select 'submission',
-           'problem_id',  prefix + problems.collect {|p| ["[#{p.name}] #{p.full_name}", p.id]}, 
-           (selected ? { selected: "#{selected}"} : {} ),
-           html_options
+  def toggle_button(on,toggle_url,id)
+      link_to (on ? "Yes" : "No"), toggle_url,
+        {class: "btn btn-block btn-xs btn-#{on ? 'success' : 'default'} ajax-toggle",
+         id: id,
+         data: {remote: true, method: 'get'}}
   end
 
   def user_title_bar(user)