diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index 0db12e244..e49e4f6d0 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -1089,6 +1089,12 @@ module ApplicationHelper
     url
   end
 
+  def is_logout?
+    ret = cookies[:login_flag] == 1 ? true : false
+    cookies.delete(:login_flag)
+    ret
+  end
+
   def back_url_hidden_field_tag
     url = back_url
     hidden_field_tag('back_url', url, :id => nil) unless url.blank?