if (document.images) {
   img1 = new Image(); img1.src = "image/b_home2.gif";
   img2 = new Image(); img1.src = "image/b_tokucyou2.gif";
   img3 = new Image(); img1.src = "image/b_ryoukin2.gif";
   img4 = new Image(); img1.src = "image/b_mousikomi2.gif";
   img5 = new Image(); img1.src = "image/b_affi2.gif";
   img6 = new Image(); img1.src = "image/b_faq2.gif";
   img7 = new Image(); img1.src = "image/b_toiawase2.gif";
}
function setImage(img, image) {
   if (img) {
      img.src = image;
   }
}