diff --git a/app/views/projects/_new_join.html.erb b/app/views/projects/_new_join.html.erb
index c823f5ed0..c406ac2e6 100644
--- a/app/views/projects/_new_join.html.erb
+++ b/app/views/projects/_new_join.html.erb
@@ -18,6 +18,13 @@
 
   <script type="text/javascript">
       function clickCanel(){hideModal("#popbox02");}
+      function clickSure()
+      {
+          if ($('#new_join_course').submit())
+          {
+              hideModal("#popbox02");
+          }
+      }
   </script>
 </head>
 
@@ -33,7 +40,7 @@
         <label>请输入课程密码:</label>
         <%= text_field_tag 'course_password', nil, :style=>'width:300px;'%>
         <div class="ni_btn">
-          <a href="javascript:" class="tijiao" onclick="$('#new_join_course').submit();" >
+          <a href="javascript:" class="tijiao" onclick="clickSure();" >
             确&nbsp;&nbsp;定
           </a>
           <a href="javascript:" class="tijiao" onclick="clickCanel();">