function headimage()
{
img = new Array();
img[0] = "c0.jpg";
img[1] = "c1.jpg";
img[2] = "c2.jpg";
img[3] = "c3.jpg";
img[4] = "c4.jpg";
n = Math.floor(Math.random()*img.length);
document.write("<a href='index.html'><img src='"+img[n]+"' border='0' width='825' height='300' alt='梅野木庭園老人ホーム*UMENOKI Gerdens Senior Home*'></a>");
}