if (document.images) {
	sightseeing_button_normal = new Image (123,16)
	sightseeing_button_normal.src = "navbut/2.gif"
	sightseeing_button_over = new Image (123,16)
	sightseeing_button_over.src = "navbut/2_on.gif"
	events_button_normal = new Image (123,16)
	events_button_normal.src = "navbut/3.gif"
	events_button_over = new Image (123,16)
	events_button_over.src = "navbut/3_on.gif"
	arts_button_normal = new Image (123,16)
	arts_button_normal.src = "navbut/4.gif"
	arts_button_over = new Image (123,16)
	arts_button_over.src = "navbut/4_on.gif"
	hotels_button_normal = new Image (123,16)
	hotels_button_normal.src = "navbut/5.gif"
	hotels_button_over = new Image (123,16)
	hotels_button_over.src = "navbut/5_on.gif"
	travel_button_normal = new Image (123,16)
	travel_button_normal.src = "navbut/6.gif"
	travel_button_over = new Image (123,16)
	travel_button_over.src = "navbut/6_on.gif"
	cruises_button_normal = new Image (123,16)
	cruises_button_normal.src = "navbut/22.gif"
	cruises_button_over = new Image (123,16)
	cruises_button_over.src = "navbut/22_on.gif"
	rent_button_normal = new Image (123,16)
	rent_button_normal.src = "navbut/7.gif"
	rent_button_over = new Image (123,16)
	rent_button_over.src = "navbut/7_on.gif"
	restaurants_button_normal = new Image (123,16)
	restaurants_button_normal.src = "navbut/8.gif"
	restaurants_button_over = new Image (123,16)
	restaurants_button_over.src = "navbut/8_on.gif"
	clubs_button_normal = new Image (123,16)
	clubs_button_normal.src = "navbut/9.gif"
	clubs_button_over = new Image (123,16)
	clubs_button_over.src = "navbut/9_on.gif"
	shopping_button_normal = new Image (123,16)
	shopping_button_normal.src = "navbut/10.gif"
	shopping_button_over = new Image (123,16)
	shopping_button_over.src = "navbut/10_on.gif"
	confcenters_button_normal = new Image (123,16)
	confcenters_button_normal.src = "navbut/12.gif"
	confcenters_button_over = new Image (123,16)
	confcenters_button_over.src = "navbut/12_on.gif"
	confserv_button_normal = new Image (123,16)
	confserv_button_normal.src = "navbut/13.gif"
	confserv_button_over = new Image (123,16)
	confserv_button_over.src = "navbut/13_on.gif"
	transport_button_normal = new Image (123,16)
	transport_button_normal.src = "navbut/15.gif"
	transport_button_over = new Image (123,16)
	transport_button_over.src = "navbut/15_on.gif"
	financial_button_normal = new Image (123,16)
	financial_button_normal.src = "navbut/16.gif"
	financial_button_over = new Image (123,16)
	financial_button_over.src = "navbut/16_on.gif"
	education_button_normal = new Image (123,16)
	education_button_normal.src = "navbut/17.gif"
	education_button_over = new Image (123,16)
	education_button_over.src = "navbut/17_on.gif"
	health_button_normal = new Image (123,16)
	health_button_normal.src = "navbut/18.gif"
	health_button_over = new Image (123,16)
	health_button_over.src = "navbut/18_on.gif"
	sports_button_normal = new Image (123,16)
	sports_button_normal.src = "navbut/19.gif"
	sports_button_over = new Image (123,16)
	sports_button_over.src = "navbut/19_on.gif"
	info_button_normal = new Image (123,16)
	info_button_normal.src = "navbut/20.gif"
	info_button_over = new Image (123,16)
	info_button_over.src = "navbut/20_on.gif"
	companies_button_normal = new Image (123,16)
	companies_button_normal.src = "navbut/23.gif"
	companies_button_over = new Image (123,16)
	companies_button_over.src = "navbut/23_on.gif"

	acropolis_button_normal = new Image (114,16)
	acropolis_button_normal.src = "navbut/b.gif"
	acropolis_button_over = new Image (114,16)
	acropolis_button_over.src = "navbut/b_on.gif"
	nationalmuseum_button_normal = new Image (114,16)
	nationalmuseum_button_normal.src = "navbut/c.gif"
	nationalmuseum_button_over = new Image (114,16)
	nationalmuseum_button_over.src = "navbut/c_on.gif"
	parliament_button_normal = new Image (114,16)
	parliament_button_normal.src = "navbut/d.gif"
	parliament_button_over = new Image (114,16)
	parliament_button_over.src = "navbut/d_on.gif"
	lycabetus_button_normal = new Image (114,16)
	lycabetus_button_normal.src = "navbut/e.gif"
	lycabetus_button_over = new Image (114,16)
	lycabetus_button_over.src = "navbut/e_on.gif"
	byzantine_button_normal = new Image (114,16)
	byzantine_button_normal.src = "navbut/f.gif"
	byzantine_button_over = new Image (114,16)
	byzantine_button_over.src = "navbut/f_on.gif"
	minitrips_button_normal = new Image (114,16)
	minitrips_button_normal.src = "navbut/g.gif"
	minitrips_button_over = new Image (114,16)
	minitrips_button_over.src = "navbut/g_on.gif"
	airport_button_normal = new Image (114,16)
	airport_button_normal.src = "navbut/h.gif"
	airport_button_over = new Image (114,16)
	airport_button_over.src = "navbut/h_on.gif"
}