/*マウスオーバー*/
function preload() {
	var img01 = new Image();
	var img02 = new Image();
	var img03 = new Image();
	var img04 = new Image();
	img01.src = "imgs/pho_bf01_01.jpg";
	img02.src = "imgs/pho_bf02_01.jpg";
	img03.src = "imgs/pho_bf03_01.jpg";
	img04.src = "imgs/pho_bf04_01.jpg";
}

function ImgChange(imgNum,imgSrc) {
	document.images[imgNum].src = imgSrc;
}