var TitleDelete = new Class({
  initialize: function (className) {
    var titles = $ES('div#' + className + ' a');
    if (titles.length > 0) {
      titles.each(function(t){
        t.setAttribute('title', '');
      });
    }
  }
});  

// nacteni
window.addEvent('domready', function(){
  new TitleDelete('navbar');
});