if (parseInt(navigator.appVersion) >= 4)
{
	var IE4 = (navigator.appVersion.indexOf("MSIE") > 0);
	var NN4 = (navigator.appName == "Netscape");
	var OS;
	if (navigator.appVersion.indexOf("Win") > 0) OS = "Windows";
	if (navigator.appVersion.indexOf("Mac") > 0) {OS = "MacOS";}
	switch (OS)
	{
		case "Windows":
			if (IE4 > 0) document.write("<LINK href='styles/ie_style.css'rel='stylesheet' type='text/css'");
			if (NN4 > 0) document.write("<LINK href='styles/n_style.css'rel='stylesheet' type='text/css'");
			break;
		case "MacOS":
			if (IE4 > 0) document.write("<LINK href='styles/ie_style.css'rel='stylesheet' type='text/css'");
			if (NN4 > 0) document.write("<LINK href='styles/n_style.css'rel='stylesheet' type='text/css'");
			break;
	}
}

if(document.images){
	img1on=new Image();
	img1on.src="images/btn_news_over.gif";
	img2on=new Image();
	img2on.src="images/btn_chris_over.gif";
	img3on=new Image();
	img3on.src="images/btn_play_music_over.gif";
	img4on=new Image();
	img4on.src="images/btn_buy_cd_over.gif";
	img5on=new Image();
	img5on.src="images/btn_links_over.gif";
	img6on=new Image();
	img6on.src="images/btn_mission_over.gif";
	img7on=new Image();
	img7on.src="images/btn_bio_over.gif";
	img8on=new Image();
	img8on.src="images/btn_tour_dates_over.gif";
	img9on=new Image();
	img9on.src="images/btn_reviews_over.gif";
	img10on=new Image();
	img10on.src="images/btn_red_velvet_slide_over.gif";
	img11on=new Image();
	img11on.src="images/btn_guitar_instruction_over.gif";
	img12on=new Image();
	img12on.src="images/btn_contact_over.gif";
	
	img1off=new Image();
	img1off.src="images/btn_news.gif";
	img2off=new Image();
	img2off.src="images/btn_chris.gif";
	img3off=new Image();
	img3off.src="images/btn_play_music.gif";
	img4off=new Image();
	img4off.src="images/btn_buy_cd.gif";
	img5off=new Image();
	img5off.src="images/btn_links.gif";
	img6off=new Image();
	img6off.src="images/btn_mission.gif";
	img7off=new Image();
	img7off.src="images/btn_bio.gif";
	img8off=new Image();
	img8off.src="images/btn_tour_dates.gif";
	img9off=new Image();
	img9off.src="images/btn_reviews.gif";
	img10off=new Image();
	img10off.src="images/btn_red_velvet_slide.gif";
	img11off=new Image();
	img11off.src="images/btn_guitar_instruction.gif";
	img12off=new Image();
	img12off.src="images/btn_contact.gif";		
}

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

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