function clickob()
{
	var obra = document.getElementById("obra");
	
	if(obra.style.display == "inline")
		obra.style.display = "none";
	else
		obra.style.display = "inline";
}

function linkac()
{
	
	var link = document.getElementById("linkalfacentauro");
	link.href = "#";
	
	var logo = document.getElementById("logoalfacentauro");
	logo.src = "images/logo4.gif";

}