diff --git a/app/controllers/projects_controller.rb b/app/controllers/projects_controller.rb
index 76e136216..2b58f1265 100644
--- a/app/controllers/projects_controller.rb
+++ b/app/controllers/projects_controller.rb
@@ -344,12 +344,22 @@ class ProjectsController < ApplicationController
 
   end
 
+  # 两种情况：1、系统外用户；2、系统内用户 (通过邮件判定)
   def send_mail_to_member
     if !params[:mail].blank? && User.find_by_mail(params[:mail].to_s).nil?
       email = params[:mail]
       Mailer.run.send_invite_in_project(email, @project, User.current)
       @is_zhuce =false
       flash[:notice] = l(:notice_email_sent, :value => email)
+    elsif !User.find_by_mail(params[:mail].to_s).nil?
+      user = User.find_by_mail(params[:mail].to_s)
+      if !user.member_of?(@project)
+        email = params[:mail]
+        Mailer.run.request_member_to_project(email, @project, User.current)
+        flash[:notice] = l(:notice_email_sent, :value => email)
+      else
+        flash[:error] = l(:label_member_of_project, :value => email)
+      end
     else
       flash[:error] = l(:notice_registed_error, :value => email)
       @is_zhuce = true
@@ -358,6 +368,7 @@ class ProjectsController < ApplicationController
       format.html{redirect_to invite_members_by_mail_project_url(@project)}
     end
   end
+
   #发送邮件邀请新用户
   def invite_members_by_mail
     if User.current.member_of?(@project) || User.current.admin? 
diff --git a/app/models/mailer.rb b/app/models/mailer.rb
index 7a6bab627..a834ddb14 100644
--- a/app/models/mailer.rb
+++ b/app/models/mailer.rb
@@ -69,6 +69,18 @@ class Mailer < ActionMailer::Base
     mail :to => email, :subject => @subject
   end
 
+  # 邀请已注册的用户加入项目
+  def request_member_to_project(email, project, invitor)
+    user = User.find_by_mail(email.to_s)
+      Member.create(:role_ids => [4], :user_id => user.id,:project_id => project.id)
+      @invitor_name = "#{invitor.name}"
+      @project_name = "#{project.name}"
+      @user = user
+      @token = Token.get_token_from_user(user, 'autologin')
+      @project_url = url_for(:controller => 'projects', :action => 'show', :id => project.id,:user => user, :token => @token.value)
+      mail :to => email, :invitor_name => "#{@invitor_name}", :project_name => "#{@project_name}"
+  end
+
   # author: alan
   # 根据用户选择发送个人日报或周报
   # 发送内容： 项目【缺陷，讨论区，新闻】，课程【通知，留言，新闻】， 贴吧， 个人留言
diff --git a/app/views/attachments/_project_file_links.html.erb b/app/views/attachments/_project_file_links.html.erb
index 28fde5fe1..a42593290 100644
--- a/app/views/attachments/_project_file_links.html.erb
+++ b/app/views/attachments/_project_file_links.html.erb
@@ -1,23 +1,49 @@
 <script type="text/javascript">
     document.addEventListener('DOMContentLoaded',function(){
         var img = document.getElementsByName('issue_attachment_picture');
-        function getImgNaturalStyle(img,callback) {
-            var nWidth, nHeight
-            if (typeof img.naturalWidth == "undefined"|| img.naturalWidth == 0) { // 现代浏览器
+
+
+        function getImgNaturalStyle(img, callback) {
+            var nWidth, nHeight;
+            if (typeof img.naturalWidth == "undefined"|| img.naturalWidth == 0) {
                 var image = new Image();
                 image.src = img.src;
-                nWidth = image.width;
-                nHeight = image.height;
-            } else {
-                nWidth = img.naturalWidth;
-                nHeight = img.naturalHeight;
+                if (image.complete) {
+                    callback(image);
+                } else {
+                    image.onload = function () {
+                        callback(image);
+                        image.onload = null;
+                    };
+                };
+
             }
-            return [nWidth, nHeight]
+            else
+            {
+                if (img.complete) {
+                    nWidth = img.naturalWidth;
+                    nHeight = img.naturalHeight;
+                } else {
+                    img.onload = function () {
+                        nWidth = img.naturalWidth;
+                        nHeight = img.naturalHeight;
+                        image.onload = null;
+                    };
+                };
+
+            }
+            return [nWidth, nHeight];
         }
 
+
+        function UpdateImageInformation(image) {
+            return [image.width,image.height];
+        }
+
+
         for(i=0;i<img.length;i++)
         {
-            imgNatural = getImgNaturalStyle(img[i]);
+            imgNatural = getImgNaturalStyle(img[i],UpdateImageInformation);
             var width = imgNatural[0];
             var height = imgNatural[1];
             if (width<100)
@@ -29,7 +55,10 @@
             }
         }
     });
+
+
 </script>
+
 <div class="attachments" style="font-weight:normal;">
   <% is_float ||= false %>
   <% for attachment in attachments %>
diff --git a/app/views/mailer/request_member_to_project.html.erb b/app/views/mailer/request_member_to_project.html.erb
new file mode 100644
index 000000000..7c0d25dbb
--- /dev/null
+++ b/app/views/mailer/request_member_to_project.html.erb
@@ -0,0 +1,22 @@
+
+<div class="mail_box" style="border:1px solid #c8c8c8; width:570px; height: auto; padding:15px; margin-top:10px; margin-bottom:10px;">
+  <ul style="list-style-type:none; margin:0; padding:0;">
+
+    <li style="list-style-type:none; margin:0; padding:0;"><span style="float: left;"><strong><%= l(:mail_issue_content)%></strong></span>
+		<span style="float: left; width: 526px">
+        	<p><span style="color:#1b55a7; font-weight:bold;"><%= @invitor_name %></span> 邀请您加入项目：<span style="color:#1b55a7; font-weight:bold;"><%= @project_name %></span> </p>
+          <div class="cl" style="margin-top: 30px; clear:both; overflow:hidden;"></div>
+          <p>点击“同意加入”按钮，即可快速加入项目！</p> <br/>
+          <label  class="mail_reply">
+            <%= link_to( l(:label_agree_join_project), @project_url,  :class => "mail_reply", :style =>'display:block; float:right; width:80px; text-align:center; height:30px; background:#15bccf; color:#fff; font-weight:normal; font-size:14px; line-height: 30px;') %>
+          </label>
+          <div class="cl" style="margin-top: 30px; clear:both; overflow:hidden;"></div>
+        </span>
+    </li>
+
+  </ul>
+
+  <div class="cl" style="margin-top: 30px; clear:both; overflow:hidden;"></div>
+</div>
+
+
diff --git a/app/views/mailer/request_member_to_project.text.erb b/app/views/mailer/request_member_to_project.text.erb
new file mode 100644
index 000000000..ef2f5d130
--- /dev/null
+++ b/app/views/mailer/request_member_to_project.text.erb
@@ -0,0 +1,3 @@
+<%= @invitor_name %>
+<%= @project_name %>
+<%= link_to( l(:label_apply_project), @project_url) %>
\ No newline at end of file
diff --git a/config/locales/projects/zh.yml b/config/locales/projects/zh.yml
index 3b125181e..e371296a5 100644
--- a/config/locales/projects/zh.yml
+++ b/config/locales/projects/zh.yml
@@ -48,11 +48,13 @@ zh:
   #  左边栏
   #           
   label_project_id: "项目ID:"
-    
+
+  label_agree_join_project: 同意加入
   label_apply_project: "+申请加入"
   label_button_following: "+添加关注"
   label_exit_project: 退出项目
   label_apply_project_waiting: 已处理申请，请等待管理员审核
+  label_member_of_project: 该用户已经是项目成员了！
   label_unapply_project: 取消申请
   lable_sure_exit_project: 是否确认退出该项目
   label_friend_organization: 圈子模式
diff --git a/public/stylesheets/project.css b/public/stylesheets/project.css
index 27a32b18a..c175ae38d 100644
--- a/public/stylesheets/project.css
+++ b/public/stylesheets/project.css
@@ -338,7 +338,7 @@ a:hover.st_add{ color:#ff8e15;}
 .newpro_box input{  height:26px; float:left; margin-bottom:10px;}
 .newpro_box textarea{  height:150px; float:left; margin-bottom:10px;}
 .newpro_box select{ height:29px; float:left; margin-bottom:10px;}
-.label{ width:80px; text-align:right; font-size:14px; background-image: url(../images/true.png); }
+/*.label{ width:80px; text-align:right; font-size:14 background-image: url(../images/true.png); }*/
 .icon-reload  { background-image: url(../images/reload.png); }
 .icon {
     background-position: 0% 50%;