Event.observe(window, 'load', function(){
	
	new Ajax.Updater(
			
			'actualites_accueil_contenu',			
			'actualites_ajax.php',
			{
				method: 'get',
				encoding: 'UTF-8',
				
				onLoading: function(){
			  		$('chargement_actus').show();
			  	},
			  
			  	onSuccess: function(transport){
			  		$('chargement_actus').hide();
			  	}
			}
		);	
});