function displayBanner(id) {
  if ($(id).style.display == "block") {
    $(id).style.display = 'none';
  } else {
    $(id).style.display = 'block';
  }
}

function changeRelatedArticles(__article_id_old,__object,__shop_id) {
  var __article_id_new=__object[__object.selectedIndex].value;

  $("__article_img150_" + __article_id_old).src = "/item_image/" + __related_articles[__article_id_old][__article_id_new]['jan_code'] + "/1/r.jpg";
  $("__article_url_image_" + __article_id_old).href = "/article/"+ __shop_id + "/" + __article_id_new + "/";
  $("__article_url_name_" + __article_id_old).href = "/article/"+ __shop_id + "/" + __article_id_new + "/";
  $("__article_url_detail_" + __article_id_old).href = "/article/"+ __shop_id + "/" + __article_id_new + "/";
  $("__article_price_" + __article_id_old).innerHTML = "¥" + commify(__related_articles[__article_id_old][__article_id_new]['shop_price']);
  $("__article_price_sum_" + __article_id_old).innerHTML = "(Àǹþ¡§¥" + commify(__related_articles[__article_id_old][__article_id_new]['shop_sum']) + ")";
  $("__article_cart_" + __article_id_old).href = "/cart/add?sid="+ __shop_id +"&bid=-" + __article_id_new + "&sign=";
}