gistfile1.txt

  $('body').on('click','.toggle_show_add_tn_form', function(){
     var menu_item_id_val=$(this).attr('data-menu-item-id');
     var this_form=$('#tn-' + menu_item_id_val);
     var $that=$(this);
     this_form.toggle("slow",function(){
       if(this_form.is(":visible")){
         $that.text('hide tasting note form')
       }else{
         $that.text('show tasting note form')
       }
     });

  });