function nif(dni) {
	dni=dni.toUpperCase();
  numero = dni.substr(0,dni.length-1);
  let = dni.substr(dni.length-1,1);
  numero = numero % 23;
  letra='TRWAGMYFPDXBNJZSQVHLCKET';
  letra=letra.substring(numero,numero+1);
  if (letra!=let)
  		return false;
  	else return true; 
}

function validarCIF(texto) {
    var pares = 0;
    var impares = 0;
    var suma;
    var ultima;
    var unumero;
    var uletra = new Array("J", "A", "B", "C", "D", "E", "F", "G", "H", "I");
    var xxx;
    
    texto = texto.toUpperCase();
    
    var regular = new RegExp(/^[ABCDEFGHKLMNPQS]\d\d\d\d\d\d\d[0-9,A-J]$/g);
     if (!regular.exec(texto)) return false;
         
     ultima = texto.substr(8,1);

     for (var cont = 1 ; cont < 7 ; cont ++){
         xxx = (2 * parseInt(texto.substr(cont++,1))).toString() + "0";
         impares += parseInt(xxx.substr(0,1)) + parseInt(xxx.substr(1,1));
         pares += parseInt(texto.substr(cont,1));
     }
     xxx = (2 * parseInt(texto.substr(cont,1))).toString() + "0";
     impares += parseInt(xxx.substr(0,1)) + parseInt(xxx.substr(1,1));
     
     suma = (pares + impares).toString();
     unumero = parseInt(suma.substr(suma.length - 1, 1));
     unumero = (10 - unumero).toString();
     if(unumero == 10) unumero = 0;
     
     if ((ultima == unumero) || (ultima == uletra[unumero]))
         return true;
     else
         return false;
}



/* Made by Mathias Bynens <http://mathiasbynens.be/> */

function number_format(a, b, c, d) {
 a = Math.round(a * Math.pow(10, b)) / Math.pow(10, b);
 e = a + '';
 f = e.split('.');
 if (!f[0]) {
  f[0] = '0';
 }
 if (!f[1]) {
  f[1] = '';
 }
 if (f[1].length < b) {
  g = f[1];
  for (i=f[1].length + 1; i <= b; i++) {
   g += '0';
  }
  f[1] = g;
 }
 if(d != '' && f[0].length > 3) {
  h = f[0];
  f[0] = '';
  for(j = 3; j < h.length; j+=3) {
   i = h.slice(h.length - j, h.length - j + 3);
   f[0] = d + i +  f[0] + '';
  }
  j = h.substr(0, (h.length % 3 == 0) ? 3 : (h.length % 3));
  f[0] = j + f[0];
 }
 c = (b <= 0) ? '' : c;
 return f[0] + c + f[1];
}