window.addEvent('domready', function() {
  
  var news = [];
  var x = 0;
  var change_texte = function(){
    
    var myFx = new Fx.Tween($('menu_defilant'),{duration: 'long'});
    var myFx2 = new Fx.Tween($('menu_defilant'),{duration: 'long'});
    
    myFx.start('left','350px','620px').chain(
      function(){
        if (news[x].link != "")
          $('menu_defilant').set('html','<a href="' + news[x].link + '">' + news[x].text + '</a>');
        else
          $('menu_defilant').set('html',news[x].text);
          
        this.start('left','620px','350px');
      }
    )
    
    myFx2.start('right','0px','270px').chain(
      function(){
        this.start('right','270px','0px');
      }
    )
    
    x++;
    if (x === news.length)
      x = 0;
  };
  
  // recherche les images de fond disponibles
  var req = new Request.JSON({url: 'scripts/liste_news.php',
  	onComplete: function(obj) {
  		news = obj.news;
  		change_texte.run();
  	}
  });
  req.send(); 
  
  change_texte.periodical(8000);
});