var navigation_img_src;

function navigation_over(main, subnavi, sub, has_submenu) {
	img = get_image(main, subnavi, sub);
	if (subnavi == 0) {
		if (has_submenu) {
			set_image(img, 'http://frontend01.perfectprice.de/web/zentral/navigation/grafiken/main_aktiv.gif');
		}
		else {
			set_image(img, 'http://frontend01.perfectprice.de/web/zentral/navigation/grafiken/emptymain_aktiv.gif');
		}
	}
	else {
		set_image(img, 'http://frontend01.perfectprice.de/web/zentral/navigation/grafiken/sub_aktiv.gif');
	}
}

function navigation_out(main, subnavi, sub, has_submenu) {
	img = get_image(main, subnavi, sub);
	set_image(img, navigation_img_src);
}

function get_image(main, subnavi, sub) {
	eval("img = document.images.navigation_"+main+"_"+subnavi+"_"+sub+";");
	return img;
}

function set_image(img, href) {
	navigation_img_src = img.src;
	img.src = href;
}