/*ロールオーバー*/
function swapimg(ImgName, ImgSrc) {
document.images[ImgName].src=ImgSrc;
}

/*プレロード*/
BtnImg = new Array();
for(i=0; i<=7; i++) {
BtnImg[i] = new Image();
}
BtnImg[0].src = "../img/btn01_o.gif";
BtnImg[1].src = "../img/btn02_o.jpg";
BtnImg[2].src = "../img/btn03_o.jpg";
BtnImg[3].src = "../img/btn04_o.jpg";
BtnImg[4].src = "../img/btn05_o.jpg";
BtnImg[5].src = "../img/btn06_o.jpg";
BtnImg[6].src = "../img/btn07_o.jpg";