function lastMod()
{
	
	var mes=new Array("Enero","Febrero","Marzo","Abril","Mayo","Junio","Julio","Agosto","Setiembre","Octubre","Noviembre","Diciembre");
	var dia=new Array("Domingo","Lunes","Martes","Miercoles","Jueves","Viernes","Sabado");
	var x = new Date (document.lastModified);
	Modif = new Date(x.toGMTString());
	Year = takeYear(Modif);
	Month = Modif.getMonth();
	Day = Modif.getDate();
	Mod = (Date.UTC(Year,Month,Day,0,0,0))/86400000;
	x = new Date();
	today = new Date(x.toGMTString());
	Year2 = takeYear(today);
	Month2 = today.getMonth();
	Day2 = today.getDate();
	now = (Date.UTC(Year2,Month2,Day2,0,0,0))/86400000;
	daysago = now - Mod;
	if (daysago < 0) return '';
	unit = 'dias';
	if (daysago > 730)
	{
		daysago = Math.floor(daysago/365);
		unit = 'años';
	}
	else if (daysago > 60)
	{
		daysago = Math.floor(daysago/30);
		unit = 'meses';
	}
	else if (daysago > 14)
	{
		daysago = Math.floor(daysago/7);
		unit = 'semanas'
	}
	var towrite = 'Esta página fue modificada ';
	if (daysago == 0) towrite += 'hoy ';
	else if (daysago == 1) towrite += 'ayer ';
	else towrite += daysago + ' ' + unit + ' atras el ';
	towrite += dia[Modif.getDay()]+' '+ Modif.getDate() +" de " + mes[Modif.getMonth()]+" de "+ Modif.getYear() + " a las "+Modif.getHours() + ":" + Modif.getMinutes();
	return towrite;
}

function takeYear(theDate)
{
	x = theDate.getYear();
	var y = x % 100;
	y += (y < 38) ? 2000 : 1900;
	return y;
}

document.write('<font color=#ffffff>'+lastMod()+'</font>')