function banniere() {
var how_many_ads = 2;
var now = new Date()
var sec = now.getSeconds()
var ad = sec % how_many_ads;
ad +=1;

if (ad==1) {
url="http://www.hydroquebec.com/mieuxconsommer/excellence/index.html";
alt="Image : Concours Excellence MIEUX CONSOMMER";
banner="http://www.hydroquebec.com/archives_bandeaux/bannieres_excellence_mieux_consommer/banniere_excellence_fr.gif";
width="180";
height="90";
}

if (ad==2) {
url="http://www.hydroquebec.com/produitsefficaces/promo-partenaires/index.html";
alt="Image : Programme Produits efficaces - Éclairage. Recevez a coup sur !";
banner="http://www.hydroquebec.com/archives_bandeaux/2010/promotion-coup-sur.gif";
width="180";
height="90";
}


document.write('<a href=\"' + url + '\" target=\"_top\">');
document.write('<img src=\"' + banner + '\" width=')
document.write(width + ' height=' + height + ' ');
document.write('alt=\"' + alt + '\" border=0>');
document.write('</a>');
}