function Get_Obj (id)
{
	return document.getElementById ? document.getElementById(id) : document.all[id];
}
function Ocultar_Capa(id)
{
	obj = Get_Obj(id);
	if (obj.style) obj.style.display = "none";
	//if (obj.style) obj.style.visibility = "hidden";
}
function Mostrar_Capa(id)
{
	obj = Get_Obj(id);
	if (obj.style) obj.style.visibility = "visible";
}
function Poner_Contenido(id, html_str)
{
	var obj = Get_Obj (id);
	if (obj != undefined) obj.innerHTML = html_str;
}
function Leer_Contenido(id)
{
  var obj = Get_Obj (id);
  if (obj != undefined) return obj.innerHTML;
}
function Poner_Precios()
{
	su = "su";
	Ocultar_Capa("re"+su);	
}