function oculta() 
{
	if (document.getElementById("masinfo")) document.getElementById("masinfo").style.display="none";
	if (document.getElementById("otrosdocs")) document.getElementById("otrosdocs").style.display="none";
	if (document.getElementById("masautor")) document.getElementById("masautor").style.display="none";
	if (document.getElementById("anejo")) document.getElementById("anejo").style.display="none";
}

function toggle(targetId) 
{
	if (document.getElementById) 
	{
		target=document.getElementById(targetId);
		if (target.style.display == "none") 
		{
			target.style.display="";
			document.getElementById("signo"+targetId).src="../imagenes_n_mdC/ic_menos.gif";
		}
		else
		{
			target.style.display="none";
			document.getElementById("signo"+targetId).src="../imagenes_n_mdC/ic_mas.gif";
		}
	}
}