function ahora(){
   var mydate=new Date();
   var year=mydate.getYear();
   if(year < 1000){ year+=1900; }
   var day=mydate.getDay();
   var month=mydate.getMonth();
   var daym=mydate.getDate();
   var dayarray=new Array("Domingo","Lunes","Martes","Miercoles","Jueves","Viernes","Sabado");
   var montharray=new Array("Enero","Febrero","Marzo","Abril","Mayo","Junio","Julio","Agosto","Septiembre","Octubre","Noviembre","Diciembre");
   document.write(dayarray[day]+" "+daym+" de "+montharray[month]+" de "+year);
  }
  
  function abrir_ventana(contenido, nombre, p){
    var parametros = new Array;
	var sh = screen.height;
	var sw = screen.width;
    parametros[0] = "toolbar=no,location=no,directories=no,status=yes,menubar=no,scrollbars=no,resizable=no,width=1024,height=768";
    parametros[1] = "toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width=1,height=1";
    parametros[2] = "toolbar=no,location=no,directories=no,status=yes,menubar=no,scrollbars=no,resizable=yes,width=550,height=360,top=0,left=0";
    parametros[3] = "fullscreen";
    parametros[4] = "width=1,height=1,top=2000,left=2000";
	parametros[5] = "toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width=440,height=440,top=" + (sh - 300)/2 + ",left=" + (sw - 550)/2;
	parametros[6] = "toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no,width=360,height=550";
    if(parametros == ''){ p = 0; }	
    ventana = window.open(contenido, nombre, parametros[p],  true);
  }