function resfreshJackpot(){
  $.ajax({
    url: '/parametre/jackpot.html',
    success: function(data) {
      if(parseFloat(data) == data){
        $('#box_jackpot_gain').html(data+" pts");     
        setTimeout("resfreshJackpot()",2000);    
      }
      else
        document.location.reload();     
  }});
}