function cambiarFecha(dia, mes, anio)
{
	ajax = cargarAjax();
	ajax.open("GET", "./calendario?dia=" + dia + "&mes=" + mes + "&anio=" + anio, false);
	ajax.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
	ajax.onreadystatechange = 
	function()
	{
		if (ajax.readyState == 4)
		{
			document.getElementById("calendario").innerHTML = ajax.responseText;
		}
	}
	ajax.send(null);
	return false;
}