// random
function randomImg() {

var domain = "http://deneb001.heteml.jp/zenhyo-kanto/wp-content/themes/zenhyo/";
img = new Array();
img[0] = domain + "images/common/eyecatch_1.jpg";
img[1] = domain + "images/common/eyecatch_2.jpg";
img[2] = domain + "images/common/eyecatch_3.jpg";
img[3] = domain + "images/common/eyecatch_4.jpg";
img[4] = domain + "images/common/eyecatch_5.jpg";
n = Math.floor(Math.random()*img.length);
document.write("<img src='"+ img[n] + "' width='960' height='290' alt='道路交通の安全と円滑をめざして。' />");
}