var max = 5;
var item = Math.round( Math.random() * max+1);
var items= String(item);
document.write("<a href='http://www.cfpafirephoto.org/' title='Link to CFPA'>");
document.write("<img src='http://www.cfpafirephoto.org/banners/banner70" + items + ".jpg' width=468 height=60 border=0 alt='Link to CFPA'>");
document.write("</a>");