img = new Array();
img[0] = "/images/header_1.jpg";
img[1] = "/images/header_2.jpg";
img[2] = "/images/header_3.jpg";
img[3] = "/images/header_4.jpg";

function setBanner(){
	amount = img.length;
	No = Math.floor(Math.random()*amount);
	document.write("<p><img src='" + img[No] + "' alt='—出雲大社結婚式場専属・出雲教結婚式場専属—　独立軒写真場' width='780' height='205' /></p>");
}