fix some slow javascript. oops

app/assets/javascripts/cocoon.js

@@ -11,7 +11,7 @@
     return $(this).parent().siblings(selector);
   }
 
-  $('.add_fields').live('click', function(e) {
+  $(document).on('click', '.add_fields', function(e) {
     e.preventDefault();
     var $this                 = $(this),
         assoc                 = $this.data('association'),
@@ -67,7 +67,6 @@
 
     trigger_node.trigger('cocoon:before-remove', [node_to_delete]);
 
-
     var timeout = trigger_node.data('remove-timeout') || 0;
 
     setTimeout(

app/assets/javascripts/cocoon/ordered.js

@@ -1,8 +1,7 @@
-//= require jquery.ui.all
-//
 (function($) {
   $.cocoon = {
     ordered: {
+      isSetUp: false,
       options: {
         items: '> .nested-fields',
         stop: function(e, ui) {
@@ -74,7 +73,10 @@
           });
         });
 
+        if (!$.cocoon.ordered.isSetUp) {
           $(document).on('cocoon:after-insert', function() { $.cocoon.ordered.setup(); });
+          $.cocoon.ordered.isSetUp = true;
+        }
       }
     },
   };