if(document.images) {
// top nav        
	top_travelporter_on = new Image()
	top_travelporter_on.src = "img/nav/top_travelporter_on.jpg";

	top_travelporter_off = new Image()
	top_travelporter_off.src = "img/nav/top_travelporter_off.jpg";
        
	top_limo_on = new Image()
	top_limo_on.src = "img/nav/top_limo_on.jpg";

	top_limo_off = new Image()
	top_limo_off.src = "img/nav/top_limo_off.jpg";
        
	top_standorte_on = new Image()
	top_standorte_on.src = "img/nav/top_standorte_on.jpg";

	top_standorte_off = new Image()
	top_standorte_off.src = "img/nav/top_standorte_off.jpg";
        
	top_jobs_on = new Image()
	top_jobs_on.src = "img/nav/top_jobs_on.jpg";

	top_jobs_off = new Image()
	top_jobs_off.src = "img/nav/top_jobs_off.jpg";
        
	top_kontakt_on = new Image()
	top_kontakt_on.src = "img/nav/top_kontakt_on.jpg";

	top_kontakt_off = new Image()
	top_kontakt_off.src = "img/nav/top_kontakt_off.jpg";

// side nav
	preisbeispiele_on = new Image()
	preisbeispiele_on.src = "img/nav/preisbeispiele_on.gif";

	preisbeispiele_off = new Image()
	preisbeispiele_off.src = "img/nav/preisbeispiele_off.gif";
        
	travelporter_partner_on = new Image()
	travelporter_partner_on.src = "img/nav/travelporter_partner_on.gif";

	travelporter_partner_off = new Image()
	travelporter_partner_off.src = "img/nav/travelporter_partner_off.gif";
        
	terms_on = new Image()
	terms_on.src = "img/nav/terms_on.gif";

	terms_off = new Image()
	terms_off.src = "img/nav/terms_off.gif";
	
	agbs_on = new Image()
	agbs_on.src = "img/nav/agbs_on.gif";

	agbs_off = new Image()
	agbs_off.src = "img/nav/agbs_off.gif";
        
	callback_on = new Image()
	callback_on.src = "img/nav/callback_on.gif";

	callback_off = new Image()
	callback_off.src = "img/nav/callback_off.gif";
	
	franchising_on = new Image()
	franchising_on.src = "img/nav/franchising_on.gif";

	franchising_off = new Image()
	franchising_off.src = "img/nav/franchising_off.gif";
	
	franchising_g_on = new Image()
	franchising_g_on.src = "img/nav/franchising_g_on.gif";

	franchising_g_off = new Image()
	franchising_g_off.src = "img/nav/franchising_g_off.gif";
	
	franchising_p_on = new Image()
	franchising_p_on.src = "img/nav/franchising_p_on.gif";

	franchising_p_off = new Image()
	franchising_p_off.src = "img/nav/franchising_p_off.gif";

	kontakt_system_on = new Image()
	kontakt_system_on.src = "img/nav/kontakt_system_on.gif";

	kontakt_system_off = new Image()
	kontakt_system_off.src = "img/nav/kontakt_system_off.gif";
	
	buchung_on = new Image()
	buchung_on.src = "img/nav/buchung_on.gif";

	buchung_off = new Image()
	buchung_off.src = "img/nav/buchung_off.gif";
	
	deutsch_on = new Image()
	deutsch_on.src = "img/nav/deutsch_on.gif";

	deutsch_off = new Image()
	deutsch_off.src = "img/nav/deutsch_off.gif";
	
	english_on = new Image()
	english_on.src = "img/nav/english_on.gif";

	english_off = new Image()
	english_off.src = "img/nav/english_off.gif";

	function rollover(arg,arg2) {
		image = eval(arg2 + arg + "_on.src");
		document[arg].src = image
	}
	        
	function rollback(arg,arg2) {
		if (arg == active) {
			image = eval(arg2 + arg + "_on.src")
		} else {
			image = eval(arg2 + arg + "_off.src")
		}
		document[arg].src = image
	}
}