// マウスを上に置くと画像を入れ替える(画像を先に読み込む)
// 入れ替える画像
img = new Array("../img/n_top/b_newproduct_ov.gif","../img/n_top/b_newproduct.gif","../img/n_top/b_ink_ov.png","../img/n_top/b_ink.png","../img/n_top/b_toner_ov.png","../img/n_top/b_toner.png","../img/n_top/b_paper_ov.png","../img/n_top/b_paper.png","../img/n_top/b_memory_ov.png","../img/n_top/b_memory.png");
bfImg = new Array();
for(i=0; i<img.length; i++) {
  bfImg[i] = new Image();
  bfImg[i].src = img[i];
}