function submit_filtre(f) {
  //alert("submit form " + f.name);
  return true;
}

$(document).ready(function(){

  $(".navigation-evenements").click(function() {
    var href= $(this).attr("href"); 
    $("select.select-filtre option:selected").each(function(index) {
      var val = $(this).attr("value");
      if (val != undefined && val != "") {
        href = href + "&" + $(this).parent().attr("name") + "=" + val;
      }
    });
    //alert("href = " + href);
    $(this).attr("href", href);
  });
  
});