function mostraDescricao(tabela) {
	tabela = tabela.parentNode.parentNode.parentNode;
	
	var tr = tabela.getElementsByTagName("tr");

	metade = tr[5];
	completa = tr[6];
	
	if (completa.style.display == "none") {
		completa.style.display = "";
		metade.style.display = "none";
	} else {
		completa.style.display = "none";
		metade.style.display = "";
	}
	
	return false;
}