/* ロールオーバー画像先読み */
if(document.images) {
	var imgs = new Array();
	imgs[0] = new Image();  imgs[0].src = "/images/home_on.png"; //画像パスを入力
	imgs[1] = new Image();  imgs[1].src = "/images/home_off.png";
	imgs[2] = new Image();  imgs[2].src = "/images/info_on.png";
	imgs[3] = new Image();  imgs[3].src = "/images/info_off.png";
	imgs[4] = new Image();  imgs[4].src = "/images/service_on.png";
	imgs[5] = new Image();  imgs[5].src = "/images/service_off.png";
	imgs[6] = new Image();  imgs[6].src = "/images/price_on.png";
	imgs[7] = new Image();  imgs[7].src = "/images/price_off.png";
	imgs[8] = new Image();  imgs[8].src = "/images/app_on.png";
	imgs[9] = new Image();  imgs[9].src = "/images/app_off.png";
	imgs[10] = new Image();  imgs[10].src = "/images/support_on.png";
	imgs[11] = new Image();  imgs[11].src = "/images/support_off.png";
}

function chgimg(id, imgname) {
	if(document.images) {
		if(imgs[imgname]) {
			document.images[id].src = imgs[imgname].src;
		}
		else {
			document.images[id].src = imgname;
		}
	}
}