diff --git a/app/models/enabled_module.rb b/app/models/enabled_module.rb
index 94539ec00..fe668e02c 100644
--- a/app/models/enabled_module.rb
+++ b/app/models/enabled_module.rb
@@ -22,7 +22,6 @@ class EnabledModule < ActiveRecord::Base
   validates_uniqueness_of :name, :scope => :project_id
 
   after_create :module_enabled
-
   private
 
   # after_create callback used to do things when a module is enabled
@@ -35,4 +34,6 @@ class EnabledModule < ActiveRecord::Base
       end
     end
   end
+
+
 end
diff --git a/app/views/welcome/contest.html.erb b/app/views/welcome/contest.html.erb
index 3554f85dd..a3cc9f6e9 100644
--- a/app/views/welcome/contest.html.erb
+++ b/app/views/welcome/contest.html.erb
@@ -111,6 +111,11 @@
 
     fixedBar('backTopBtn' , {autoHidden: true, top : 186});
     fixedBar('identifier-pannel' , {autoHidden: false , top : 956 , show : true});
+    //修改微信扫码样式布局后添加微信扫码跟随滚动处理
+    $(window).scroll(function(){
+         var vtop=$(document).scrollTop();
+         $("#identifier-pannel").css('top',vtop+"px");
+    })
     }
 })();
 </script>
diff --git a/app/views/welcome/index.html.erb b/app/views/welcome/index.html.erb
index b73f0970f..4fd01d319 100644
--- a/app/views/welcome/index.html.erb
+++ b/app/views/welcome/index.html.erb
@@ -29,7 +29,8 @@
 </script>
 
 <div class='top_bar'>
-	<div id="identifier-pannel" style="display:none">
+
+	<div id="identifier-pannel" style="display:none;">
 		<%= link_to image_tag('/images/qrweixin.jpg', size: '150x150', alt: 'trustie', class: "weixin" ), home_path %>
 		<div class="weixin-content">微信扫码</div>
 	</div>
diff --git a/public/javascripts/welcome.js b/public/javascripts/welcome.js
index a0166bb3f..13466edd0 100644
--- a/public/javascripts/welcome.js
+++ b/public/javascripts/welcome.js
@@ -60,5 +60,10 @@
 
 		fixedBar('backTopBtn' , {autoHidden: true, top : 186});
 		fixedBar('identifier-pannel' , {autoHidden: false , top : 956 , show : true});
+        //修改微信扫码样式布局后添加微信扫码跟随滚动处理
+        $(window).scroll(function(){
+            var vtop=$(document).scrollTop();
+            $("#identifier-pannel").css('top',vtop+"px");
+        })
 	}
 })();
\ No newline at end of file
diff --git a/public/stylesheets/welcome.css b/public/stylesheets/welcome.css
index c6bdd1ab5..3e333d231 100644
--- a/public/stylesheets/welcome.css
+++ b/public/stylesheets/welcome.css
@@ -340,7 +340,7 @@ a.attachments_list_color {
 }
 
 #identifier-pannel{
-    position:fixed;
+    position:absolute;
     left: 50%;
     bottom:0;
     z-index:9999;