diff --git a/app/helpers/event_news_helper.rb b/app/helpers/event_news_helper.rb
index 303a29f..094e3c5 100644
--- a/app/helpers/event_news_helper.rb
+++ b/app/helpers/event_news_helper.rb
@@ -1,4 +1,6 @@
 module EventNewsHelper
+  extend self
+
   def data_to_human_type(a,set_tag_ids=nil)
     statuses = a.statuses_with_classname.collect do |status|
       {
@@ -88,7 +90,7 @@ module EventNewsHelper
         sort_maps = {event_date: :asc, is_top: :desc, postdate: :asc, id: :asc}
       else
         sort_maps = {is_top: :desc}
-        if EventNewsHelper.is_postdate_sort_first
+        if is_postdate_sort_first
           sort_maps = sort_maps.merge({postdate: :desc, event_date: :desc, id: :desc})
         else
           sort_maps = sort_maps.merge({event_date: :desc, postdate: :desc, id: :desc})
@@ -234,8 +236,7 @@ module EventNewsHelper
   end
 
   def sort_event_news(event_news_list)
-    enable_manually_sort = enable_manually_sort
-    if @show_today_data_first || !EventNewsHelper.is_postdate_sort_first
+    if @show_today_data_first || !is_postdate_sort_first
       if enable_manually_sort
         event_news_list = event_news_list.sort_by { |event_news|
             tmp1 = event_news["event_date"].blank?
@@ -551,41 +552,43 @@ module EventNewsHelper
       </div>
     </div>").html_safe
   end
-  class << self
-    def complementaryColor(my_hex)
-      if my_hex[0] == '#'
-        my_hex = my_hex[1..-1]
-      end
-      rgb = my_hex.split(//).each_slice(my_hex.length/3).map{|v| v.join}
-      comp = rgb.map{|a| (255 - a.to_i(16)).to_s(16).rjust(2,'0')}
-      '#'+comp.join
+
+  def complementaryColor(my_hex)
+    if my_hex[0] == '#'
+      my_hex = my_hex[1..-1]
     end
-    def lighten_color(my_hex,percent)
-      if my_hex[0] == '#'
-        my_hex = my_hex[1..-1]
-      end
-      rgb = my_hex.split(//).each_slice(my_hex.length/3).map{|v| v.join}
-      comp = rgb.collect do |a|
-        tmp = a.to_i(16)*(1+percent/100.0)
-        tmp = 255 if tmp>255
-        tmp = 0 if tmp < 0
-        tmp.to_i.to_s(16).rjust(2,'0')
-      end
-      '#'+comp.join
+    rgb = my_hex.split(//).each_slice(my_hex.length/3).map{|v| v.join}
+    comp = rgb.map{|a| (255 - a.to_i(16)).to_s(16).rjust(2,'0')}
+    '#'+comp.join
+  end
+
+  def lighten_color(my_hex,percent)
+    if my_hex[0] == '#'
+      my_hex = my_hex[1..-1]
     end
-    def enable_manually_sort
-      if defined?(OrbitHelper::SharedHash) && OrbitHelper::SharedHash
-        OrbitHelper::SharedHash['event_news_mod'][:enable_manually_sort]
-      else
-        EventNewsSetting.first.enable_manually_sort rescue false
-      end
+    rgb = my_hex.split(//).each_slice(my_hex.length/3).map{|v| v.join}
+    comp = rgb.collect do |a|
+      tmp = a.to_i(16)*(1+percent/100.0)
+      tmp = 255 if tmp>255
+      tmp = 0 if tmp < 0
+      tmp.to_i.to_s(16).rjust(2,'0')
     end
-    def is_postdate_sort_first
-      if defined?(OrbitHelper::SharedHash) && OrbitHelper::SharedHash
-        OrbitHelper::SharedHash['event_news_mod'][:is_postdate_sort_first]
-      else
-        EventNewsSetting.first.is_postdate_sort_first rescue false
-      end
+    '#'+comp.join
+  end
+
+  def enable_manually_sort
+    if defined?(OrbitHelper::SharedHash) && OrbitHelper::SharedHash
+      OrbitHelper::SharedHash['event_news_mod'][:enable_manually_sort]
+    else
+      EventNewsSetting.first.enable_manually_sort rescue false
+    end
+  end
+
+  def is_postdate_sort_first
+    if defined?(OrbitHelper::SharedHash) && OrbitHelper::SharedHash
+      OrbitHelper::SharedHash['event_news_mod'][:is_postdate_sort_first]
+    else
+      EventNewsSetting.first.is_postdate_sort_first rescue false
     end
   end
 end