diff --git a/app/controllers/birthdays_controller.rb b/app/controllers/birthdays_controller.rb
index 4408dcc..6f94739 100644
--- a/app/controllers/birthdays_controller.rb
+++ b/app/controllers/birthdays_controller.rb
@@ -12,21 +12,8 @@ class BirthdaysController < ApplicationController
   # crontab:
   # 30 3 * * * wget --post-data '' http://contact-o-rama.de/birthdays/do_mailing
   def do_mailing
-    birthdays_2d = get_birthdays_next_2d
-    birthdays_7d = get_birthdays_next_7d
-    logger.debug "birthdays_2d.nil? = " + birthdays_2d.nil?.to_s + "......"
-    unless birthdays.nil?
-      birthdays_by_email = group_birthdays_by_email(birthdays_7d)
-      birthdays_by_email.each do |email, bdays|
-        UserMailer.next_weeks_birthday_notification(email, bdays).deliver
-      end
-
-      # logger.debug "..... birthdays: " + birthdays.count.to_s + "......"
-      # birthdays.each do |bday|
-      #   logger.info "............< do_mailing: " + bday.firstname + " " + bday.lastname + " >.............."
-      #   UserMailer.next_weeks_birthday_notification(birthdays).deliver
-      # end
-    end
+    do_mailing_days_in_advance(2)
+    do_mailing_days_in_advance(7)
 
     logger.debug "........... Mailings done (or had none to do)"
     respond_to do |format|
@@ -38,22 +25,18 @@ class BirthdaysController < ApplicationController
 
   private
 
-  def get_birthdays_next_7d
-    get_birthdays_next_n_days(7)
-  end
-
-  def get_birthdays_next_2d
-    get_birthdays_next_n_days(2)
-  end
-
-  def get_birthdays_in_7d
-    get_birthdays_in_n_days(7)
-  end
-
-  def get_birthdays_in_2d
-    get_birthdays_in_n_days(2)
+  def do_mailing_days_in_advance(num_days)
+    birthdays = get_birthdays_in_n_days(num_days)
+    logger.debug "[" + num_days.to_s + "]: birthdays.nil? = " + birthdays.nil?.to_s + "......"
+    unless birthdays.nil?
+      birthdays_by_email = group_birthdays_by_email(birthdays)
+      birthdays_by_email.each do |email, bdays|
+        UserMailer.next_weeks_birthday_notification(email, bdays, num_days).deliver
+      end
+    end
   end
 
+  # returns all birthdays happening during the next num_days.
   def get_birthdays_next_n_days(num_days)
     n = Date.today
     e = Date.today + num_days.days
@@ -69,6 +52,7 @@ class BirthdaysController < ApplicationController
     birthdays    
   end
 
+  # returns all birthdays happening exactly num_days from now.
   def get_birthdays_in_n_days(num_days)
     target_date = Date.today + num_days.days
     birthdays = Contact.where("birth_month = ? AND birth_day = ?", target_date.month, target_date.day)