function obtenerFecha($fecha){
		$row = split("/",$fecha);		
		switch($row[1]){
			case "1":
				$mes = "ENERO";
			break;
			case "01":
				$mes = "ENERO";
			break;
			case "2":
				$mes = "FEBRERO";
			break;
			case "02":
				$mes = "FEBRERO";
			break;
			case "3":
				$mes = "MARZO";
			break;
			case "03":
				$mes = "MARZO";
			break;
			case "4" :
				$mes = "ABRIL";
			break;
			case "04":
				$mes = "ABRIL";
			break;
			case "5" :
				$mes = "MAYO";
			break;
			case "05":
				$mes = "MAYO";
			break;
			case "6":
				$mes = "JUNIO";
			break;
			case "06":
				$mes = "JUNIO";
			break;
			case "7":
				$mes = "JULIO";
			break;
			case "07":
				$mes = "JULIO";
			break;
			case "8":
				$mes = "AGOSTO";
			break;
			case "08":
				$mes = "AGOSTO";
			break;
			case "9":
				$mes = "SEPTIEMBRE";
			break;
			case "09":
				$mes = "SEPTIEMBRE";
			break;
			case "10":
				$mes = "OCTUBRE";
			break;			
			case "11":
				$mes = "NOVIEMBRE";
			break;
			case "12":
				$mes = "DICIEMBRE";
			break;
		}		
		
		$day = weekday($fecha);
		
		switch($day){
			case "0":
				$dia = "LUNES ";
			break;
			case "1":
				$dia = "MARTES ";
			break;
			case "2":
				$dia = "MIERCOLES ";
			break;
			case "3":
				$dia = "JUEVES ";
			break;
			case "4":
				$dia = "VIERNES ";
			break;
			case "5":
				$dia = "SABADO ";
			break;
			case "6":
				$dia = "DOMINGO ";
			break;
		}
		
		return "DEL DIA ".$dia.$row[0]." DE ".$mes." DEL ".$row[2];
	}
 function prior_monday($fyear, $fmonth, $fday)
 {
     return date("Y-m-d", mktime(0, 0, 0, $fmonth, $fday - weekday($fyear, $fmonth, $fday), $fyear));
 }