prevent double note submit

app/views/notes/_notes.html.haml

@@ -9,6 +9,15 @@
   $('.delete-note').live('ajax:success', function() {  
     $(this).closest('li').fadeOut(); });  
 
+  $("#new_note").live("ajax:before", function(){
+    $("#submit_note").attr("disabled", "disabled"); 
+  })
+
+  $("#new_note").live("ajax:complete", function(){
+    $("#submit_note").removeAttr("disabled"); 
+  })
+  
+
 - if ["issues", "projects"].include?(controller.controller_name)
   :javascript
     $(function(){