anchor.diff:  
         $("body").on("click", ".collapser", function (event) {
           $(this).parent("h3").toggleClass("nested-fields-visible");
  -        $(this).closest(".nested-fields").children(".nested-inline-fields").slideToggle("slow");
  -
  +        $(this).parent("h3").parent(".nested-fields").siblings().find("h3").removeClass("nested-fields-visible").next(".nested-inline-fields").hide();
  +        $(this).closest(".nested-fields").children(".nested-inline-fields").toggle();
   
           for(k in CKEDITOR.instances) {
               var instance = CKEDITOR.instances[k];
  -            instance.destroy()
  +            instance.destroy();
           }
   
           $ ('.wysiwyg.source').each(function() {
  
positive.code:       });
  
        $('body').bind('cocoon:after-insert', function(event, insertedItem) {
          insertedItem.children(".nested-inline-fields").slideToggle("slow");
          insertedItem.children("h3").addClass("nested-fields-visible");
        });
  
  
negative.code:         if (this.checked) {
  
            parent.addClass("nested-wrapper-ordering");
            nested_inline_fields.show();
            nested_container.children(".links").hide();
            nested_title_fields.removeClass("nested-fields-visible");
            nested_title_fields.children(".collapser").addClass("no-collapser").removeClass("collapser");
  