function write_date() {
  if (document.getElementById &&  document.createTextNode) {	
    var thetime=new Date();
    var nday=thetime.getDay();
    var nmonth=thetime.getMonth();
    var ntoday=thetime.getDate();
    var nyear=thetime.getYear();
    var AorP=" ";

    if (nday==0)
      nday="Domingo";
    if (nday==1)
      nday="Lunes";
    if (nday==2)
      nday="Martes";
    if (nday==3)
      nday="Miercoles";
    if (nday==4)
      nday="Jueves";
    if (nday==5)
      nday="Viernes";
    if (nday==6)
      nday="Sabado";

    nmonth+=1;

    if (nyear<=99)
      nyear= "19"+nyear;
    if ((nyear>99) && (nyear<2000))
      nyear+=1900;
    
	var t_date = document.getElementById("todays_date");
    t_date.innerHTML = "Bienvenido, Hoy es "+nday+": "+ntoday+"-"+nmonth+"-"+nyear;
  }
} 
write_date();