var max = 3;
var nrImages = 3;
function makeImages() {
this[0] = "http://i1.easy-share.com/images/es20/728x90.gif";
this[1] = "http://freakshare.net/banner/freakshare728x90_1.jpg";
this[2] = "http://www.linkbucks.com/tmpl/mint/img/728_90link_bucks.gif";

this.length = nrImages;
}

function makeLinks() {
this[0] = "http://www.easy-share.com/p/2930916";
this[1] = "http://freakshare.net/?ref=156541";
this[2] = "http://www.linkbucks.com/referral/149504";

this.length = nrImages;
}

var vetImages = new makeImages();
var vetLinks = new makeLinks();
var x = Math.round(Math.random()*max);
var y = max / nrImages;
for(var cont = 1;cont*y<= max;cont++) {
if (x <= (cont*y)) {
document.write("<center><a href="+vetLinks[cont-1]+" target=_blank><img src="+vetImages[cont-1]+" border=0></a></center>");

break;
}
}