var subtop_active_image = "";
		subtop_images_over = new Array(6);
		subtop_images_norm = new Array(6);
		var subtop_path = '';
		var subtop_selected = 0;
		var subtop_ready = false;


		function subtop_over (image_name) {
			if (subtop_ready) {
				if (subtop_active_image != "")
					subtop_out();

				document.images[image_name].src = subtop_images_over[image_name].src;

				subtop_active_image = image_name;
			}
		}

		function subtop_out () {
			if (subtop_ready) {
				if (subtop_active_image != "") {
					document.images[subtop_active_image].src = subtop_images_norm[subtop_active_image].src;
					subtop_active_image = "";
				}
			}
		}

		function subtop_load (image_name, selected) {

			subtop_images_over[image_name] = new Image();
			subtop_images_norm[image_name] = new Image();

			subtop_images_over[image_name].src = subtop_path + image_name + '_a.gif';

			if (selected)
				subtop_images_norm[image_name].src = subtop_path + image_name + '_a.gif';
			else
				subtop_images_norm[image_name].src = subtop_path + image_name + '_n.gif';
		}

		function subtop_init () {
			subtop_load('front', (subtop_selected == 1));
			subtop_load('program', (subtop_selected == 2));
			subtop_load('register', (subtop_selected == 3));
			subtop_load('about', (subtop_selected == 4));
			subtop_load('contact', (subtop_selected == 5));
			subtop_ready = true;
		}


/*
document.img_temp = '';
document.img_active = '';


function img_load_normal(url, name, istatus) {
	img_load('img_normal', url, name, istatus);
}

function img_load_over(url, name, istatus) {
	img_load('img_over', url, name, istatus);
}

function img_load_click(url, name, istatus) {
	img_load('img_click', url, name, istatus);
}

function img_load(img_type, url, name, istatus) {
	if (document[img_type] == null)
		document[img_type] = new Array();

	if (document[img_type][name] == null) {
		document[img_type][name] = new Image();
		document[img_type][name].src = url;
		document[img_type][name].istatus = istatus;
	}
}


function img_swap_over(name) {
	if (document.images[name] != null) 
		img_load_normal(document.images[name].src, name, '');
	img_swap('img_over', name);
	document.img_temp = name;
}

function img_swap_click(name) {
	if (document.img_active != name) {
		img_swap('img_click', name);
		document.img_active = name;
	}
}

function img_swap(img_type, name) {
	if (document[img_type] && (document[img_type][name] != null) && (document.images[name] != null) ) {
		document.images[name].src = document[img_type][name].src;
		window.status = document[img_type][name].istatus;
	}
	else if (document[img_type] && (document[img_type][name] != null) ) {
		for (i = 0; i < document.forms.length; i++) {

		//alert(document.forms[i][name]);
			if (document.forms[i][name] != null) {
				alert(1);
				document.forms[i][name].src = document[img_type][name].src;
				window.status = document[img_type][name].istatus;
			}
		}
	}
}

function img_swap_out() {
	if (document.img_active == document.img_temp) {
		img_swap('img_click', document.img_temp);
	}
	else {
		img_swap('img_normal', document.img_temp);
		document.img_temp = '';
	}
}*/