function abreFotoGaleria(localFoto)
{
    document.getElementById('fotoGrande').src = localFoto;
}

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) {
		etapas_over = newImage("images/etapas-over.gif");
		etapas_down = newImage("images/etapas-down.gif");
		ranking_over = newImage("images/ranking-over.gif");
		ranking_down = newImage("images/ranking-down.gif");
		regulamento_over = newImage("images/regulamento-over.gif");
		regulamento_down = newImage("images/regulamento-down.gif");
		informacoes_over = newImage("images/informacoes-over.gif");
		informacoes_down = newImage("images/informacoes-down.gif");
		contatos_over = newImage("images/contatos-over.gif");
		contatos_down = newImage("images/contatos-down.gif");
		links_over = newImage("images/links-over.gif");
		links_down = newImage("images/links-down.gif");
		cadastro_over = newImage("images/cadastro-over.gif");
		cadastro_down = newImage("images/cadastro-down.gif");
		home_over = newImage("images/home-over.gif");
		home_down = newImage("images/home-down.gif");
		fotos_over = newImage("images/fotos-over.gif");
		fotos_down = newImage("images/fotos-down.gif");
		preloadFlag = true;
	}
}