//Rollover JavaScript Level 1

browserName = navigator.appName;
browserVer = parseInt(navigator.appVersion);

if (browserName == "Netscape" && browserVer >= 3) version = "n3";
else if (browserName == "Microsoft Internet Explorer" && browserVer >= 3) version = "n3";
else version = "n2";

if (version == "n3"){

	homeon = new Image(33,12);
	homeon.src = "images/tnav_home_ro.gif";
	bioon = new Image(57,12);
	bioon.src = "images/tnav_bio_ro.gif";
	keynoteon = new Image(83,12);
	keynoteon.src = "images/tnav_keynote_ro.gif";
	bookson = new Image(34,12);
	bookson.src = "images/tnav_books_ro.gif";
	teston = new Image(70,12);
	teston.src = "images/tnav_test_ro.gif";
	faqon = new Image(22,12);
	faqon.src = "images/tnav_faq_ro.gif";
	contacton = new Image(43,12);
	contacton.src = "images/tnav_contact_ro.gif";
	
	homeoff = new Image(33,12);
	homeoff.src = "images/tnav_home.gif";
	biooff = new Image(57,12);
	biooff.src = "images/tnav_bio.gif";
	keynoteoff = new Image(83,12);
	keynoteoff.src = "images/tnav_keynote.gif";
	booksoff = new Image(34,12);
	booksoff.src = "images/tnav_books.gif";
	testoff = new Image(70,12);
	testoff.src = "images/tnav_test.gif";
	faqoff = new Image(22,12);
	faqoff.src = "images/tnav_faq.gif";
	contactoff = new Image(43,12);
	contactoff.src = "images/tnav_contact.gif";
	
}

function img_act(imgName){
	if (version == "n3"){
		imgOn = eval(imgName + "on.src");
		document [imgName].src = imgOn;
	}
}

function img_inact(imgName){
	if (version == "n3"){
		imgOff = eval(imgName + "off.src");
		document [imgName].src = imgOff;
	}
}