jQuery().ready(function(){

   var bann = new Array ();  // on donne les liens de chaque bannière
   bann[0] = "https://i.servimg.com/u/f71/18/46/22/21/psycho13.jpg";
   bann[1] = "https://i.servimg.com/u/f71/18/46/22/21/psycho16.jpg";
   bann[2] = "https://i.servimg.com/u/f71/18/46/22/21/psycho17.jpg";

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

   document.getElementById("bann").innerHTML = "<a href=\"https://psychotropia.forumactif.org\"><img src=\""+bann[i]+"\" alt=\"mon forum\" border=\"0\"></a>";
   
});