Remove remotipart (not working with ie9) the upload is working except that the pop-up does not disappear in ie

Gemfile

@@ -26,7 +26,7 @@ gem 'mysql2'
 gem 'nokogiri'
 gem 'radius'
 gem 'rake'
-gem 'remotipart'
+# gem 'remotipart'
 gem 'resque' # background jobs
 gem 'resque-scheduler' # job scheduling
 gem 'resque-restriction'

app/assets/javascripts/new_admin.js

@@ -17,4 +17,4 @@
 //= require side_bar_history
 //= require rss
 //= require ajax_form
-//= require jquery.remotipart
+//= require inc/ajax_setting

app/views/admin/assets/file_upload.html.erb

@@ -53,7 +53,7 @@
     </div>
     <div style="position: absolute; width: 100%; bottom: 0;">
         <div class="modal-footer">
-            <%= f.submit t(:create), :class => "btn btn-primary" %>
+            <a id='ajax_form_submit' class="btn btn-primary"><%= t(:create) %></a>
         </div>
     </div>