function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		banda_larga_over = newImage("imagens/home-page-over.gif");
		Tecnologia_over = newImage("imagens/about-us-over.gif");
		products_over = newImage("imagens/products-over.gif");
		services_over = newImage("imagens/services-over.gif");
		my_account_over = newImage("imagens/my-account-over.gif");
		hom = newImage("imagens/home.gif");
		contact_us_over = newImage("imagens/contact-us-over.gif");
		preloadFlag = true;
	}
}

// -->