if (document.images) {
//上部ボタン
   btn_memb = new Image(); btn_memb.src = "img_e/btn_memb_o.gif";
   btn_join = new Image(); btn_join.src = "img_e/btn_join_o.gif";
   btn_stan = new Image(); btn_stan.src = "img_e/btn_stan_o.gif";
//ホーム・JAPANESE
   home = new Image(); home.src = "img_e/home_o.gif";
   japanese = new Image(); japanese.src = "img_e/japanese_o.gif";
//右部メニュー
   mn_abou = new Image(); mn_abou.src = "img_e/mn_abou_o.gif";
   mn_outl = new Image(); mn_outl.src = "img_e/mn_outl_o.gif";
   mn_conf = new Image(); mn_conf.src = "img_e/mn_conf_o.gif";
   mn_even = new Image(); mn_even.src = "img_e/mn_even_o.gif";
   mn_arch = new Image(); mn_arch.src = "img_e/mn_arch_o.gif";
   mn_prod = new Image(); mn_prod.src = "img_e/mn_prod_o.gif";
   mn_mode = new Image(); mn_mode.src = "img_e/mn_mode_o.gif";
   mn_link = new Image(); mn_link.src = "img_e/mn_link_o.gif";
}
function setImage(img_e, image) {
   if (img_e) {
      img.src = image;
   }
}