function fechaLarga() {
   var Hoy=new Date();
   var diaSemana=new Array("Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday");
   var meses=new Array("January","February","March","April","May","June","July","August","September","October","November","December");
   var devuelve=diaSemana[Hoy.getDay()]+', '+meses[Hoy.getMonth()]+', '+Hoy.getDate()+', '+Hoy.getFullYear();
   return devuelve;
}
document.write("<font size=\"1\" color=\"#999999\" face=\"Arial, Helvetica, sans-serif\">"+fechaLarga()+"</font>");