diff --git a/app/views/welcome/contest.html.erb b/app/views/welcome/contest.html.erb
index 8165cfb0a..c5681148e 100644
--- a/app/views/welcome/contest.html.erb
+++ b/app/views/welcome/contest.html.erb
@@ -152,7 +152,7 @@
 
 	<div style="clear:both"></div>
 
-<div id="J_Slide" class="d-p-index-box d-p-index-hotproject" >
+<div id="J_Slide" class="d-p-index-box d-p-index-left" >
 <h3 style="margin-left: 5px; color: #e8770d;"><strong><%=l(:label_current_hot_contest)%></strong></h3>
 	<span style="margin-top: -20px;float: right; display: block;">
         <% if User.current.logged? %>
@@ -193,7 +193,7 @@
 </div>
 
 
-<div id="J_Slide" class="d-p-index-box d-p-index-hotproject" style="float: right;">
+<div id="J_Slide" class="d-p-index-box d-p-index-Dynamic">
   <h3 style="margin-left: 5px; color: #e8770d;">
 	<strong><%=l(:label_notification)%></strong>
 </h3>
@@ -218,7 +218,7 @@
 </ul>
 </div>
 
-<div id="J_Slide" class="d-p-index-box d-p-index-hotproject" style="float: right;">
+<div id="J_Slide" class="d-p-index-box d-p-index-Dynamic">
 <h3 style="margin-left: 5px; color: #e8770d;">
 	<strong><%=l(:label_issue_feedback_activities)%></strong>
 	<%= link_to l(:label_my_question), newbie_send_path, {:class => 'orangeButton idea_btn', :style => "color: #EEEEEE" }%>
@@ -255,7 +255,7 @@
 </div>
 
 
-<div id="J_Slide" class="d-p-index-box d-p-index-hotproject" style="float: left;">
+<div id="J_Slide" class="d-p-index-box d-p-index-left">
 <h3 style="margin-left: 5px; color: #e8770d;"><strong><%=l(:label_current_attendingcontest_work)%></strong></h3>
 	<span style="margin-top: -20px;float: right; display: block;"><%= link_to l(:label_more_information), {:controller => 'softapplications', :action => 'index'}, :target => "_blank" %></span>
 	<div class="d-p-projectlist-box">
diff --git a/app/views/welcome/course.html.erb b/app/views/welcome/course.html.erb
index b9eec5014..464d3af4d 100644
--- a/app/views/welcome/course.html.erb
+++ b/app/views/welcome/course.html.erb
@@ -76,7 +76,7 @@
 <div style="clear:both"></div>
 
 
-<div id="J_Slide" class="d-p-index-box d-p-index-hotproject">
+<div id="J_Slide" class="d-p-index-box d-p-index-hot">
   <h3><strong><%= l(:lable_hot_course)%></strong></h3>
 
   <% month_now = Time.now.strftime("%m").to_i %>
@@ -122,7 +122,7 @@
   <% end %>
 </div>
 
-<div id="J_Slide" class="d-p-index-box d-p-index-hotproject" style="float: right;">
+<div id="J_Slide" class="d-p-index-box d-p-index-hot" style="float: right;">
   <h3 style="padding-bottom:0px ;margin-left: 5px; color: #e8770d;">
     <strong><%= l(:label_issue_feedback_activities)%></strong>
     <%= link_to l(:label_my_question), newbie_send_path, {:class => 'orangeButton idea_btn', :style => "color: #EEEEEE"} %>
diff --git a/app/views/welcome/index.html.erb b/app/views/welcome/index.html.erb
index 8b610bdbc..b76b14e1d 100644
--- a/app/views/welcome/index.html.erb
+++ b/app/views/welcome/index.html.erb
@@ -54,7 +54,7 @@
 
 	<div style="clear:both"></div>
 
-<div id="J_Slide" class="d-p-index-box d-p-index-hotproject">
+<div id="J_Slide" class="d-p-index-box d-p-index-hot">
     <h3 style="margin-left: 5px; color: #e8770d;">
       <strong><%= l(:lable_hot_projects)%></strong>
     </h3>
@@ -107,7 +107,7 @@
 	</div>
 </div>
 
-<div id="J_Slide" class="d-p-index-box d-p-index-hotproject" style="float: right;">
+<div id="J_Slide" class="d-p-index-box d-p-index-Dynamic">
 		<ul class="user-welcome-message-list">
 			<h3 style="color: rgb(21, 188, 207)"><strong><%= l(:lable_user_active)%></strong></h3>
 			<span style="margin-top: -20px;float: right; display: block;"><%= link_to l(:label_more), { :controller => 'users', :action => 'index'}, :target => "_blank"  %></span>
diff --git a/public/javascripts/attachments.js b/public/javascripts/attachments.js
index 1a1d11363..1504019d7 100644
--- a/public/javascripts/attachments.js
+++ b/public/javascripts/attachments.js
@@ -24,7 +24,7 @@ function addFile(inputEl, file, eagerUpload) {
         $('<input>', { 'type': 'text', 'class': 'filename readonly', 'name': 'attachments[' + attachmentId + '][filename]', 'readonly': 'readonly'} ).val(file.name),
         $('<input>', { 'type': 'text', 'class': 'description', 'name': 'attachments[' + attachmentId + '][description]', 'maxlength': 254, 'placeholder': $(inputEl).data('description-placeholder') } ).toggle(!eagerUpload),
         $('<span >公开:</span>').attr({  'class': 'ispublic-label' }) ,
-        $('<input>', { 'type': 'checkbox', 'class': 'is_public_checkbox','value':1, 'name': 'attachments[' + attachmentId + '][is_public]', checked:'checked' } ).toggle(!eagerUpload),
+        $('<input>', { 'type': 'checkbox', 'class': 'is_public_checkbox','value':1, 'name': 'attachments[' + attachmentId + '][is_public_checkbox]', checked:'checked' } ).toggle(!eagerUpload),
         $('<a>&nbsp</a>').attr({ 'href': "#", 'class': 'remove-upload', 'data-confirm' : "您确定要删除吗？" }).click(removeFile).toggle(!eagerUpload),
         $('<div>', {  'class': 'div_attachments', 'name': 'div_'+'attachments_' + attachmentId} )
     ).appendTo('#attachments_fields');
diff --git a/public/stylesheets/welcome.css b/public/stylesheets/welcome.css
index 227cc6870..6c472bcac 100644
--- a/public/stylesheets/welcome.css
+++ b/public/stylesheets/welcome.css
@@ -103,6 +103,24 @@ ul.welcome-message-list{
     margin-top: 10px;
     float: left;
 }
+ .d-p-index-hot{
+     width: 48%;
+     margin-top: 10px;
+     float: left;
+     min-height: 400px;
+ }
+ .d-p-index-left{
+     width: 48%;
+     margin-top: 10px;
+     float: left;
+     min-height: 200px;
+ }
+ .d-p-index-Dynamic{
+     width: 48%;
+     margin-top: 10px;
+     float: right;
+     min-height: 200px;
+ }
 ul.d-p-index-hdright{
     padding: 0px;
     margin-top: -30px;