$(function() {
  $(".add_fav").click(function(){
      var element = $(this);
      var itemID = element.attr("id");
      var info = 'id=' + itemID;
      var proc_path = element.attr("sub");
      var proc_url = proc_path + 'item_fav.php';
      $.ajax({
        type: "POST",
        url: proc_url,
        data: info,
        success: function () {
          $("#add_fav_" + itemID).hide();
          $("#keepon_fav_" + itemID).hide();
          $("#del_fav_" + itemID).show();
          $("#keepoff_fav_" + itemID).show();
        }
      });
      return false;
  });
  $(".del_fav").click(function(){
      var element = $(this);
      var itemID = element.attr("id");
      var info = 'id=' + itemID;
      var proc_path = element.attr("sub");
      var proc_url = proc_path + 'item_fav.php';
      $.ajax({
        type: "POST",
        url: proc_url,
        data: info,
        success: function(){
          $("#del_fav_" + itemID).hide();
          $("#keepoff_fav_" + itemID).hide();
          $("#add_fav_" + itemID).show();
          $("#keepon_fav_" + itemID).show();
        }
      });
      return false;
  });
});