function validCedula(ced) {
  var c = ced.replace(/-/g,'');
  var cedula = c.substr(0, c.length - 1);
  var verifier = c.substr(c.length - 1, 1);
  var sum = 0;
  if(ced.length < 13) { return false; }
  for (i=0;i < cedula.length;i++) {
      mod = "";
       if((i % 2) == 0){mod = 1} else {mod = 2}
       res = cedula.substr(i,1) * mod;
       if (res > 9) {
            res = res.toString();
            one = res.substr(0,1);
            two = res.substr(1,1);
            res = eval(one) + eval(two);
       }
       sum += eval(res);
  }
  number = (10 - (suma % 10)) % 10;
  if (number == verifier && cedula.substr(0,3) != "000") {
    alert("La Cedula es valida");
  }
  else   {
   alert("La Cedula no es valida");
  }
}