function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		head_tip_home_over = newImage("/images/head_tip-home-over.gif");
		head_tip_brochure_over = newImage("/images/head_tip-brochure-over.gif");
		head_tip_contact_over = newImage("/images/head_tip-contact-over.gif");
		head_tip_snd_phone_head_tip_home_over = newImage("/images/head_tip_snd-phone-head_tip.gif");
		nav_snd_first_over = newImage("/images/nav_snd-first-over.gif");
		nav_snd_first_down = newImage("/images/nav_snd-first-down.gif");
		nav_snd_exp_over = newImage("/images/nav_snd-exp-over.gif");
		nav_snd_exp_down = newImage("/images/nav_snd-exp-down.gif");
		nsv_snd_dz_over = newImage("/images/nsv_snd-dz-over.gif");
		nsv_snd_dz_down = newImage("/images/nsv_snd-dz-down.gif");
		nsv_snd_dz_nav_snd_res_down = newImage("/images/nsv_snd-dz-nav_snd-res_down.gif");
		nav_snd_res_over = newImage("/images/nav_snd-res-over.gif");
		nav_snd_res_down = newImage("/images/nav_snd-res-down.gif");
		nav_snd_zone_over = newImage("/images/nav_snd-zone-over.gif");
		nav_snd_zone_down = newImage("/images/nav_snd-zone-down.gif");
		location_snd_bkg_nav_snd_first_down = newImage("/images/location_snd-bkg-nav_snd-fi.gif");
		location_snd_bkg_nav_snd_exp_down = newImage("/images/location_snd-bkg-nav_snd-ex.gif");
		location_snd_bkg_nsv_snd_dz_down = newImage("/images/location_snd-bkg-nsv_snd-dz.gif");
		location_snd_bkg_nav_snd_res_down = newImage("/images/location_snd-bkg-nav_snd-re.gif");
		location_snd_bkg_nav_snd_zone_down = newImage("/images/location_snd-bkg-nav_snd-zo.gif");
		index_menu_first_over = newImage("images/index_menu-first-over.gif");
		index_menu_exp_over = newImage("images/index_menu-exp-over.gif");
		index_menu_dz_over = newImage("images/index_menu-dz-over.gif");
		index_menu_res_over = newImage("images/index_menu-res-over.gif");
		index_menu_zone_over = newImage("images/index_menu-zone-over.gif");
		index_menu_img_first_index_menu_first_over = newImage("images/index_menu_img-first-index_.gif");
		index_menu_img_first_index_menu_exp_over = newImage("images/index_menu_img-first-ind-29.gif");
		index_menu_img_first_index_menu_dz_over = newImage("images/index_menu_img-first-ind-30.gif");
		index_menu_img_first_index_menu_res_over = newImage("images/index_menu_img-first-ind-31.gif");
		index_menu_img_first_index_menu_zone_over = newImage("images/index_menu_img-first-ind-32.gif");
		mid_index_locationbkg_index_menu_exp_over = newImage("images/mid_index-locationbkg-index.gif");
		preloadFlag = true;
	}
}


function show(divID) {  // Function to show/hide specified layers by image rollover.
var layercount = 5;
var div = document.getElementById('div'+divID);
 if (div.className=="hide") {
 	// Hide the other layers...
	for(i=1;i<=layercount;i++) {
		var div1 = document.getElementById('div'+i);
		if(i != divID) {
			div1.className="hide";
		} 
	}
	// Now show the specified layer...
	div.className="show";
	//document.images['img'+rowID].src="/images_common/tree_division_arrow.gif";
}
}  // End function