<!-- hide this script from non-javascript-enabled browsers// pre-cache 'filename' button state imagesif (document.images) {var abot_up = new Image(150,23)abot_up.src = "art_nav/abot_01.gif"var abot_over = new Image(150,23)abot_over.src = "art_nav/abot_02.gif"var omis_up = new Image(150,21)omis_up.src = "art_nav/omis_01.gif"var omis_over = new Image(150,21)omis_over.src = "art_nav/omis_02.gif"var howw_up = new Image(150,21)howw_up.src = "art_nav/howw_01.gif"var howw_over = new Image(150,21)howw_over.src = "art_nav/howw_02.gif"var ourc_up = new Image(150,21)ourc_up.src = "art_nav/ourc_01.gif"var ourc_over = new Image(150,21)ourc_over.src = "art_nav/ourc_02.gif"var high_up = new Image(150,21)high_up.src = "art_nav/high_01.gif"var high_over = new Image(150,21)high_over.src = "art_nav/high_02.gif"var clil_up = new Image(150,21)clil_up.src = "art_nav/clil_01.gif"var clil_over = new Image(150,21)clil_over.src = "art_nav/clil_02.gif"var levt_up = new Image(150,23)levt_up.src = "art_nav/levt_01.gif"var levt_over = new Image(150,23)levt_over.src = "art_nav/levt_02.gif"var ourm_up = new Image(150,23)ourm_up.src = "art_nav/ourm_01.gif"var ourm_over = new Image(150,23)ourm_over.src = "art_nav/ourm_02.gif"var case_up = new Image(150,23)case_up.src = "art_nav/case_01.gif"var case_over = new Image(150,23)case_over.src = "art_nav/case_02.gif"var cont_up = new Image(150,23)cont_up.src = "art_nav/cont_01.gif"var cont_over = new Image(150,23)cont_over.src = "art_nav/cont_02.gif"var smap_up = new Image(150,23)smap_up.src = "art_nav/smap_01.gif"var smap_over = new Image(150,23)smap_over.src = "art_nav/smap_02.gif"var home_up = new Image(150,23)home_up.src = "art_nav/home_01.gif"var home_over = new Image(150,23)home_over.src = "art_nav/home_02.gif"}// functions that swap imagesfunction di(id,name){  if (document.images) document.images[id].src=eval(name+".src");}// stop hiding -->