jQuery().ready(function(){

   var bann = new Array ();  // on donne les liens de chaque bannière
   bann[0] = "http://i43.tinypic.com/1zceubn.png";
   bann[1] = "http://i43.tinypic.com/ma9evq.png";
   bann[2] = "http://i39.tinypic.com/23vzyip.png";

   var i = Math.floor(3*Math.random());

   document.getElementById("bann").innerHTML = "<a href=\"http://cup-of-blood.1fr1.net/forum\"><img src=\""+bann[i]+"\" alt=\"mon forum\" border=\"0\"></a>";
   
});