ns4 = (document.layers) ? true:false
ie4 = (document.all) ? true:false
agnt=navigator.userAgent.toLowerCase();
ns6 = agnt.indexOf("netscape6");
if (ns6 = -1) {
	ns6 = false;
}

m1_off = new Image;
m1_off.src = '/images/site/nav/products_nav.gif';
m2_off = new Image;
m2_off.src = '/images/site/nav/hot_deals_nav.gif';
m3_off = new Image;
m3_off.src = '/images/site/nav/er_racing_nav.gif';
m4_off = new Image;
m4_off.src = '/images/site/nav/where_to_buy_nav.gif';
m5_off = new Image;
m5_off.src = '/images/site/nav/company_info_nav.gif';
m6_off = new Image;
m6_off.src = '/images/site/nav/contact_us_nav.gif';

m1_on = new Image;
m1_on.src = '/images/site/nav/products_nav_on.gif';
m2_on = new Image;
m2_on.src = '/images/site/nav/hot_deals_nav_on.gif';
m3_on = new Image;
m3_on.src = '/images/site/nav/er_racing_nav_on.gif';
m4_on = new Image;
m4_on.src = '/images/site/nav/where_to_buy_nav_on.gif';
m5_on = new Image;
m5_on.src = '/images/site/nav/company_info_nav_on.gif';
m6_on = new Image;
m6_on.src = '/images/site/nav/contact_us_nav_on.gif';

yl_sq_on = new Image;
yl_sq_on.src = 'images/site/bullets/ylw_square_sm2.gif';
yl_sq_off = new Image;
yl_sq_off.src = 'images/site/bullets/trans_bul.gif';

oldone = 0
if (document.layers) {
	Checkheight = window.innerHeight
	Checkwidth = window.innerWidth
	window.onResize = resizeFix
}

function resizeFix() {
	if (Checkwidth != window.innerWidth || Checkheight != window.innerHeight)
	document.location.href = document.location.href;
}
function init()
{
  if (ie4) {
  	m1 = mprods.style;
  	m3 = mrace.style;
  	m4 = mbuy.style;
  	m5 = minfo.style;
	}
 if (ns4) {
	m1 = document.mprods;
	m3 = document.mrace;
	m4 = document.mbuy;
	m5 = document.minfo;
	}

	init = 1
}

function showBig(tn)
{
	
	if (init == 1) {
	hideBig(oldone)
	
		if (tn == 1)
		{
				
				if (ie4 || ns4) {
					m1.visibility = "visible";
					oldone = tn;
				}
				if (ns6) {
					document.getElementById("mprods").style.visibility = "visible";
					oldone = tn;
				}
				//document.nav_1.src = m1_on.src;
		}
		if (tn == 3)
		{
				if (ie4 || ns4) {
				m3.visibility = "visible";
				oldone = tn;
				}
				if (ns6) {
					document.getElementById("mrace").style.visibility = "visible";
					oldone = tn;
				}
				document.nav_3.src = m3_on.src;
		}
		if (tn == 4)
		{
				if (ie4 || ns4) {
				m4.visibility = "visible";
				oldone = tn;
				}
				if (ns6) {
					document.getElementById("mbuy").style.visibility = "visible";
					oldone = tn;
				}
				document.nav_4.src = m4_on.src;
		}
		if (tn == 5)
		{
				if (ie4 || ns4) {
				m5.visibility = "visible";
				oldone = tn;
				}
				if (ns6) {
					document.getElementById("minfo").style.visibility = "visible";
					oldone = tn;
				}
				document.nav_5.src = m5_on.src;
		}
		if (tn == 2)
		{
				document.nav_2.src = m2_on.src;
		}
		if (tn == 6)
		{
				document.nav_6.src = m6_on.src;
		}

		return true;
	
}}

function hideBig(tn)
{
	
	if (init == 1) {
		if (tn == 1)
		{
			if (ie4 || ns4) {
				m1.visibility = "hidden";
			}
			if (ns6) {
					document.getElementById("mprods").style.visibility = "hidden";
				}
			//document.nav_1.src = m1_off.src;
		}
		if (tn == 3)
		{
			if (ie4 || ns4) {
				m3.visibility = "hidden";
			}
			if (ns6) {
					document.getElementById("mrace").style.visibility = "hidden";
				}
			document.nav_3.src = m3_off.src;
		}
		if (tn == 4)
		{	
			if (ie4 || ns4) {
				m4.visibility = "hidden";
			}
			if (ns6) {
					document.getElementById("mbuy").style.visibility = "hidden";
				}
			document.nav_4.src = m4_off.src;
		}
		if (tn == 5)
		{
			if (ie4 || ns4) {
				m5.visibility = "hidden";
			}
			if (ns6) {
					document.getElementById("minfo").style.visibility = "hidden";
				}
			document.nav_5.src = m5_off.src;
		}
		if (tn == 2)
		{
			document.nav_2.src = m2_off.src;
		}
		if (tn == 6)
		{
			document.nav_6.src = m6_off.src;
		}
		return true;
}}