// 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 de gauche
		navg_accueil_1 = new Image(275, 41);
		navg_accueil_1.src = "img/navg_accueil_off.gif";
		navg_accueil_2 = new Image(275, 41);
		navg_accueil_2.src = "img/navg_accueil_on.gif";

		navg_coeur_1 = new Image(275, 40);
		navg_coeur_1.src = "img/navg_coeur_off.gif";
		navg_coeur_2 = new Image(275, 40);
		navg_coeur_2.src = "img/navg_coeur_on.gif";

		navg_ventes_1 = new Image(275, 40);
		navg_ventes_1.src = "img/navg_ventes_off.gif";
		navg_ventes_2 = new Image(275, 40);
		navg_ventes_2.src = "img/navg_ventes_on.gif";

		navg_services_1 = new Image(275, 40);
		navg_services_1.src = "img/navg_services_off.gif";
		navg_services_2 = new Image(275, 40);
		navg_services_2.src = "img/navg_services_on.gif";

		navg_calcul_1 = new Image(275, 40);
		navg_calcul_1.src = "img/navg_calcul_off.gif";
		navg_calcul_2 = new Image(275, 40);
		navg_calcul_2.src = "img/navg_calcul_on.gif";

		navg_contact_1 = new Image(275, 40);
		navg_contact_1.src = "img/navg_contact_off.gif";
		navg_contact_2 = new Image(275, 40);
		navg_contact_2.src = "img/navg_contact_on.gif";
		
		// Carte de Boulogne, en bas à gauche
		carte_off = new Image(227, 160);
		carte_off.src = "img/navg_carte_off.gif";
		carte_01 = new Image(227, 160);
		carte_01.src = "img/navg_carte_01.gif";
		carte_02 = new Image(227, 160);
		carte_02.src = "img/navg_carte_02.gif";
		carte_03 = new Image(227, 160);
		carte_03.src = "img/navg_carte_03.gif";
		carte_04 = new Image(227, 160);
		carte_04.src = "img/navg_carte_04.gif";
		carte_05 = new Image(227, 160);
		carte_05.src = "img/navg_carte_05.gif";
		carte_06 = new Image(227, 160);
		carte_06.src = "img/navg_carte_06.gif";
		carte_07 = new Image(227, 160);
		carte_07.src = "img/navg_carte_07.gif";
	}