diff --git a/app/views/layouts/_base_footer.html.erb b/app/views/layouts/_base_footer.html.erb
index ee7bcecf0..baf438cb2 100644
--- a/app/views/layouts/_base_footer.html.erb
+++ b/app/views/layouts/_base_footer.html.erb
@@ -1,6 +1,6 @@
 <!--add by huang-->
 <div class="clearfix"></div>
-<div id="footer" style="margin-left:-5px;padding-top: 150px;clear: both;font-size: 12px;">
+<div id="footer" style="margin-left:-5px;padding-top: 20px;clear: both;font-size: 12px;">
 	<div style="border-top:solid 1px #C6E9F1;"></div>
  <div class="base_footer">
   <div align="center">
diff --git a/app/views/welcome/contest.html.erb b/app/views/welcome/contest.html.erb
index 65c96e4d0..ab56e4f73 100644
--- a/app/views/welcome/contest.html.erb
+++ b/app/views/welcome/contest.html.erb
@@ -9,8 +9,23 @@
 	
     $(function(){
     	$("#main").find("a").attr("target", "_blank");
+        setCss();
     });
-    
+
+    //设置div居中
+    function setCss()
+    {
+        var mainBar = $('#main-content-bar')[0];
+        var topHeight = mainBar.offsetHeight;
+        var welcomeLeft = $('#welcome_left')[0];
+        var leftHeight =  welcomeLeft.offsetHeight;
+        var searchbar = $('#J_Slide')[0];
+        var searchHeight = searchbar.offsetHeight;
+        welcomeLeft.style.marginTop  = (topHeight - leftHeight)/2 + "px";
+        searchbar.style.marginTop  = (topHeight - searchHeight)/2 + "px";
+        //alert((topHeight - leftHeight)/2 );
+    }
+
 	function showInfo(id, content) {
 		var text = $('#' + id);
 		if (text.val() == '') {
@@ -96,12 +111,12 @@
 		<%= image_tag '/images/qrweixin.jpg', size: '150x150', alt: 'trustie', class: "weixin" %>
 		<div class="weixin-content">微信扫码</div>
 	</div> 
-	<div class="main-content-bar">
+	<div class="main-content-bar" id="main-content-bar">
 	<!--文字-->	
 		<div style="float: left">
 			<%= image_tag '/images/transparent.png', size: "75x75" %>
 		</div>	
-	<div class="welcome_left" >
+	<div class="welcome_left" id="welcome_left">
 
 			<span class="font_welcome_trustie"><%= l(:label_welcome_trustie) %><%= l(:label_welcome_trustie_contest) %></span> <span class="font_welcome_tdescription">, <%= l(:label_welcome_trustie_contest_description) %></span>
 	</div>
diff --git a/app/views/welcome/course.html.erb b/app/views/welcome/course.html.erb
index eef2401f8..8b1a9d9ee 100644
--- a/app/views/welcome/course.html.erb
+++ b/app/views/welcome/course.html.erb
@@ -5,8 +5,22 @@
 
     $(function(){
         $("#main").find("a").attr("target", "_blank");
+        setCss();
     });
 
+    //设置div居中
+    function setCss()
+    {
+        var mainBar = $('#main-content-bar')[0];
+        var topHeight = mainBar.offsetHeight;
+        var welcomeLeft = $('#welcome_left')[0];
+        var leftHeight =  welcomeLeft.offsetHeight;
+        var searchbar = $('#search-bar')[0];
+        var searchHeight = searchbar.offsetHeight;
+        welcomeLeft.style.marginTop  = (topHeight - leftHeight)/2 + "px";
+        searchbar.style.marginTop  = (topHeight - searchHeight)/2 + "px";
+        //alert((topHeight - leftHeight)/2 );
+    }
     // 给主页用户弹新页面
     $(document).ready(function($) {
         $("#loggedas").find("a").attr("target", "_blank");
@@ -19,13 +33,12 @@
     <%= image_tag '/images/qrweixin.jpg', size: '150x150', alt: 'trustie', class: "weixin" %>
     <div class="weixin-content">微信扫码</div>
   </div>
-  <div class="main-content-bar">
+  <div class="main-content-bar" id="main-content-bar">
     <div style="float: left">
       <%= image_tag(@logoLink, size:'75x75') %>
 
     </div>
-    <div class="course welcome_left" >
-      <br />
+    <div class="course welcome_left" id="welcome_left" >
 			<span class="font_welcome_school"> <% if params[:school_id].nil? and User.current.user_extensions.school.nil? %>
               <% else%>
 					<% if params[:school_id] == "0" %>
@@ -48,7 +61,7 @@
           <% end %>
       <% end %>
     </div>
-    <div class="search-bar">
+    <div class="search-bar" id="search-bar">
       <%= render :partial => "search_project", :locals => {:project_type => Project::ProjectType_course}%>
     </div>
     <div style="clear: both;"></div>
diff --git a/app/views/welcome/index.html.erb b/app/views/welcome/index.html.erb
index 0a69b1f78..bb2d6cd36 100644
--- a/app/views/welcome/index.html.erb
+++ b/app/views/welcome/index.html.erb
@@ -4,8 +4,21 @@
 	
     $(function(){
     	$("#main").find("a").attr("target", "_blank");
+        setCss();
     });
-    
+    //设置div居中
+    function setCss()
+    {
+        var mainBar = $('#main-content-bar')[0];
+        var topHeight = mainBar.offsetHeight;
+        var welcomeLeft = $('#welcome_left')[0];
+        var leftHeight =  welcomeLeft.offsetHeight;
+        var searchbar = $('#search-bar')[0];
+        var searchHeight = searchbar.offsetHeight;
+        welcomeLeft.style.marginTop  = (topHeight - leftHeight)/2 + "px";
+        searchbar.style.marginTop  = (topHeight - searchHeight)/2 + "px";
+        //alert((topHeight - leftHeight)/2 );
+    }
 	// 给主页用户弹新页面
 	$(document).ready(function($) {
 		$("#loggedas").find("a").attr("target", "_blank");
@@ -18,14 +31,14 @@
 		<%= 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> 
-	<div class="main-content-bar">
+	<div class="main-content-bar" id="main-content-bar">
 		<div style="float: left">
 			<%= image_tag '/images/transparent.png', size: "75x75" %>
 		</div>		
-	<div class="welcome_left" >
+	<div class="welcome_left" id="welcome_left">
 		<span class="font_welcome_trustie"><%= l(:label_welcome_trustie) %><%= l(:label_welcome_trustie_project) %></span> <span class="font_welcome_tdescription">, <%= l(:label_welcome_trustie_project_description) %></span>
 	</div>
-	<div class="search-bar">		
+	<div class="search-bar" id="search-bar">
 		<%= render :partial => "search_project", :locals => {:project_type => 0}%>	
 	</div>
 	<div style="clear: both;"></div>
diff --git a/public/stylesheets/welcome.css b/public/stylesheets/welcome.css
index f7756e5b8..4393c1dbc 100644
--- a/public/stylesheets/welcome.css
+++ b/public/stylesheets/welcome.css
@@ -312,11 +312,11 @@ a.attachments_list_color {
 }
 .main-content-bar{
 	margin: 0; 
-    margin-top: 35px;
+    margin-top: 12px;
 	padding: 0;
-	margin-bottom: 35px; 
-	width: 100%; 
-	height: auto;
+	margin-bottom: 2px;
+	width: 100%;
+	height: 78;
 }
 
 .weixin-content{