// Gestion du roll-over
	function imgSwap(pic1,pic2)
	{
		if (document.images) 
		{
			document.images[pic1].src = eval(pic2 + ".src");
		}
	}
	// si le navigateur supporte le swap d'image
	if (document.images)
	{
		// Navigation du haut
		navh_newsletter_1 = new Image(127, 30);
		navh_newsletter_1.src = "/img/navh_newsletter_off.gif";
		navh_newsletter_2 = new Image(127, 30);
		navh_newsletter_2.src = "/img/navh_newsletter_on.gif";

		navh_philo_1 = new Image(127, 30);
		navh_philo_1.src = "/img/navh_philo_off.gif";
		navh_philo_2 = new Image(127, 30);
		navh_philo_2.src = "/img/navh_philo_on.gif";

		navh_methode_1 = new Image(106, 30);
		navh_methode_1.src = "/img/navh_methode_off.gif";
		navh_methode_2 = new Image(106, 30);
		navh_methode_2.src = "/img/navh_methode_on.gif";

		navh_lieu_1 = new Image(64, 30);
		navh_lieu_1.src = "/img/navh_lieu_off.gif";
		navh_lieu_2 = new Image(64, 30);
		navh_lieu_2.src = "/img/navh_lieu_on.gif";

		navh_equipe_1 = new Image(90, 30);
		navh_equipe_1.src = "/img/navh_equipe_off.gif";
		navh_equipe_2 = new Image(90, 30);
		navh_equipe_2.src = "/img/navh_equipe_on.gif";

		navh_contact_1 = new Image(101, 30);
		navh_contact_1.src = "/img/navh_contact_off.gif";
		navh_contact_2 = new Image(101, 30);
		navh_contact_2.src = "/img/navh_contact_on.gif";
	}