function mostrar_fecha_cabecera() {
	var hours, minutes, seconds, ap;
	var intHours, intMinutes, intSeconds;
	s_date = new Date();
	var weekDay = "";
	selectMonth = new Array("Enero", "Febrero", "Marzo", "Abril", "Mayo", "Junio", "Julio", "Agosto", "Septiembre", "Octubre", "Noviembre", "Diciembre");

	switch (s_date.getDay()) { 
		case 1: weekDay = "Lunes"; break;
		case 2: weekDay = "Martes"; break;
		case 3: weekDay = "Miércoles"; break;
		case 4: weekDay = "Jueves"; break;
		case 5: weekDay = "Viernes"; break;
		case 6:	weekDay = "Sábado"; break;
		case 7: weekDay = "Domingo"; break;
		case 0: weekDay = "Domingo"; break;
	}
			
	var setYear = s_date.getYear();
	var BName = navigator.appName;
	
	if(BName == "Netscape") { var setYear = s_date.getYear() + 1900; }

	intHours = s_date.getHours();
	intMinutes = s_date.getMinutes();
	intSeconds = s_date.getSeconds(); 

	/*switch(intHours){
		case 0: intHours = 12; hours = intHours + ":"; ap = "am"; break;
		case 12: hours = intHours + ":"; ap = "pm"; break;
		case 24: intHours = 12; hours = intHours + ":"; ap = "am"; break;
		default:    
			if (intHours > 12) { intHours = intHours - 12; hours = intHours + ":"; ap = "pm"; break; }
			if (intHours < 12) { hours = intHours + ":"; ap = "am"; }
	}*/       
  
	if (intMinutes < 10) minutes = "0" + intMinutes + ":";
	else minutes = intMinutes+":";

	if (intSeconds < 10) seconds = "0" + intSeconds + " ";
	else seconds = intSeconds + " ";

	timeString = intHours + ":" + minutes + seconds;
	
	fecha_total = s_date.getDate() + " " + selectMonth[s_date.getMonth()] + " " + setYear + " " + timeString;

	fecha_cabecera.innerHTML = fecha_total;
	window.setTimeout("mostrar_fecha_cabecera();", 100);
}