browser_name = navigator.appName;
browser_version = parseFloat(navigator.appVersion);
roll = false;

if (browser_name == "Netscape" && browser_version <= 2.0) { roll = false; }
else if (browser_name == "Netscape" && browser_version >= 3.0) { roll = true; }
else if (browser_name == "Microsoft Internet Explorer" && browser_version <= 2.0) { roll = false; }
else if (browser_name == "Microsoft Internet Explorer" && browser_version >= 3.0) { roll = true; }
else { roll = true; }

if (roll) {

	etusivu = new Image;
	etusivu.src = "img/navi-etusivu-off.jpg";
	etusivuHighlighted = new Image;
	etusivuHighlighted.src = "img/navi-etusivu-on.jpg";

	missa = new Image;
	missa.src = "img/navi-missa-off.jpg";
	missaHighlighted = new Image;
	missaHighlighted.src = "img/navi-missa-on.jpg";

	kuka = new Image;
	kuka.src = "img/navi-kuka-off.jpg";
	kukaHighlighted = new Image;
	kukaHighlighted.src = "img/navi-kuka-on.jpg";

	hoitoohjeet = new Image;
	hoitoohjeet.src = "img/navi-hoitoohjeet-off.jpg";
	hoitoohjeetHighlighted = new Image;
	hoitoohjeetHighlighted.src = "img/navi-hoitoohjeet-on.jpg";	

	galleria = new Image;
	galleria.src = "img/navi-galleria-off.jpg";
	galleriaHighlighted = new Image;
	galleriaHighlighted.src = "img/navi-galleria-on.jpg";

	function imgAct(img) {
		if (roll)
			document.images[img].src = eval(img + "Highlighted.src");
	}
		
	function imgInact(img) {
		if (roll)
			document.images[img].src = eval(img + ".src");
	}
}