var base = "../images/";

if (document.images)  {

	img1on = new Image(50,20);
	img1on.src = base + "nav_company_on.gif";
	img2on = new Image(53,20);
	img2on.src = base + "nav_products_on.gif";
	img3on = new Image(50,20);
	img3on.src = base + "nav_services_on.gif";
	img4on = new Image(77,20);
	img4on.src = base + "nav_news_on.gif";
	img5on = new Image(52,20);
	img5on.src = base + "nav_alliances_on.gif";
	img6on = new Image(59,20);
	img6on.src = base + "nav_customers_on.gif";
        
	img1off = new Image(50,20);
	img1off.src = base + "nav_company.gif";
	img2off = new Image(53,20);
	img2off.src = base + "nav_products.gif";
	img3off = new Image(50,20);
	img3off.src = base + "nav_services.gif";
	img4off = new Image(77,20);
	img4off.src = base + "nav_news.gif";
	img5off = new Image(52,20);
	img5off.src = base + "nav_alliances.gif";
	img6off = new Image(59,20);
	img6off.src = base + "nav_customers.gif";
                
	}
        
function imgOn (imgName)  {
	document.images[imgName].src = eval(imgName + "on.src");
}

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