diff --git a/app/controllers/announcements_controller.rb b/app/controllers/announcements_controller.rb
index 96f925e..def60f5 100644
--- a/app/controllers/announcements_controller.rb
+++ b/app/controllers/announcements_controller.rb
@@ -65,6 +65,8 @@ class AnnouncementsController < ApplicationController
         author = User.find(a.create_user_id).member_profile.name rescue ""
         desc = a.image_description
         desc = (desc.nil? || desc == "" ? "announcement image" : desc)
+        link_to_show = a.is_external_link ? a.external_link :  OrbitHelper.url_to_show(a.to_param)
+        target = a.is_external_link ? "_blank" : "_self"
         anns << {
           "bulletin_links" => links,
           "bulletin_files" => files,
@@ -78,7 +80,8 @@ class AnnouncementsController < ApplicationController
           "postdate" => a.postdate,
           "author" => author,
           "is_top" => (a.is_top? ? 1 : 0),
-          "link_to_show" => OrbitHelper.url_to_show(a.to_param),
+          "link_to_show" => link_to_show,
+          "target" => target,
           "img_src" => a.image.thumb.url || "/assets/announcement-default.jpg",
           "img_description" => desc,
           "more" => t(:more_plus),
@@ -144,6 +147,7 @@ class AnnouncementsController < ApplicationController
         "source-site-title" => fa["source-site-title"],
         "source-site-link" => fa["source-site"],
         "link_to_show" => OrbitHelper.url_to_show(fa["params"]),
+        "target" => "_self",
         "img_src" => fa["image"]["thumb"] || "/assets/announcement-default.jpg",
         "img_description" => fa["image_description_translations"][locale],
         "more" => t(:more_plus),
@@ -201,7 +205,9 @@ class AnnouncementsController < ApplicationController
          author = User.find(a.create_user_id).member_profile.name rescue ""
          desc = a.image_description
         desc = (desc.nil? || desc == "" ? "announcement image" : desc)
-       anns << {
+        link_to_show = a.is_external_link ? a.external_link : OrbitHelper.url_to_show(a.to_param)
+        target = a.is_external_link ? "_blank" : "_self"
+        anns << {
           "bulletin_links" => links,
           "bulletin_files" => files,
           "title" => a.title,
@@ -213,7 +219,8 @@ class AnnouncementsController < ApplicationController
           "category" => a.category.title,
           "postdate" => a.postdate,
           "author" => author,
-          "link_to_show" => OrbitHelper.widget_item_url(a.to_param),
+          "link_to_show" => link_to_show,
+          "target" => target,
           "img_src" => a.image.thumb.url || "/assets/announcement-default.jpg",
           "img_description" => desc
         }
diff --git a/app/models/bulletin.rb b/app/models/bulletin.rb
index 4f21b4c..6a295f3 100644
--- a/app/models/bulletin.rb
+++ b/app/models/bulletin.rb
@@ -24,6 +24,8 @@ class Bulletin
   field :rejected, :type => Boolean, :default => false
   field :reapproval, :type => Boolean, :default => false
   field :rejection_reason
+  field :is_external_link, :type => Boolean, :default => false
+  field :external_link
 
   field :email_id
   field :email_sent, :type => Boolean, :default => false
diff --git a/app/views/admin/announcements/_form.html.erb b/app/views/admin/announcements/_form.html.erb
index c8a001b..dec8ea1 100644
--- a/app/views/admin/announcements/_form.html.erb
+++ b/app/views/admin/announcements/_form.html.erb
@@ -52,6 +52,21 @@
         </div>
       </div>
 
+      <div class="control-group">
+        <%= f.label :is_external_link, t("announcement.is_external_link"), :class => "control-label muted" %>
+        <div class="controls">
+          <%= f.check_box :is_external_link %>
+        </div>
+      </div>
+
+      <div class="control-group" style="display: none;" id="external_link_box">
+        <%= f.label :external_link, t("announcement.external_link"), :class => "control-label muted" %>
+        <div class="controls">
+          <%= f.text_field :external_link %>
+          <div class="hint"><%= t("announcement.external_link_hint") %></div>
+        </div>
+      </div>
+
     </div>
 
     <!-- Status Module -->
@@ -441,6 +456,14 @@
         },100)
       })
 
+      $("#bulletin_is_external_link").on("click",function(){
+        if($(this).is(":checked")){
+          $("#external_link_box").show();
+        }else{
+          $("#external_link_box").hide();
+        }
+      })
+
     });
   </script>
 <% end %>
\ No newline at end of file
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 5fccf4e..0b979f6 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -75,4 +75,7 @@ en:
     mail_source: Source
     mail_time: Time
     image_upload_size_note: The following recommendations %{image_upload_size} upload size
-    resend_mail: Re-send Email
\ No newline at end of file
+    resend_mail: Re-send Email
+    is_external_link: Enable External Link
+    external_link: External Link
+    external_link_hint: "Make sure URL starts with http://"
\ No newline at end of file
diff --git a/config/locales/zh_tw.yml b/config/locales/zh_tw.yml
index a179e60..b910925 100644
--- a/config/locales/zh_tw.yml
+++ b/config/locales/zh_tw.yml
@@ -79,3 +79,6 @@ zh_tw:
     mail_time: 時間
     image_upload_size_note: 建議檔案小於%{image_upload_size}
     resend_mail: 重新寄送提醒
+    is_external_link: 開啟內部連結
+    external_link: 外部連結
+    external_link_hint: "確定連結開頭為http://"