<!--
function Filt() {
  if (document.forms[0].crea.value=="" || document.forms[0].eda.value=="" || document.forms[0].sex.value=="Nada") {
    alert("Faltan datos");
  }
  else {
    creat = document.forms[0].crea.value;
    unicreat = document.forms[0].Unicrea.value;
    edad = document.forms[0].eda.value;
    sexo =  document.forms[0].sex.value;
    afroam = document.forms[0].afro.checked;
    creat = CambioComa(creat);
    edad = CambioComa(edad);
    if (Comprobar(creat) || Comprobar(edad)) {
      alert("Datos incorrectos");
    }
    else {
      if (unicreat == "uno") {
        creat = creat;
      }
      else {
        if (unicreat == "dos") {
          creat = creat/10;
        }
        else {
          creat = creat*0.0113;
        }
      }
      Cr = Math.pow(creat,1.154);
      Ed = Math.pow(edad,0.203);
      Fi = 186/Cr;
      Fi = Fi/Ed;
      if (sexo=="Mujer") {
        Fi = Fi*0.742;
      }
      if (afroam) {
        Fi = Fi*1.21;
      }
      Fi = Math.round(Fi*100)/100;
      document.forms[0].result.value = Fi;
    }
  }
}

function Comprobar(numer) {
var todo = numer;
var numeros = "0123456789.";
k=0;
  for (i = 0;  i < todo.length;  i++) {
    if (todo.charAt(i) == ".") {
    k++;
    }
  if (k > 1) {
  return true;
  }
  }
  for (i = 0;  i < todo.length;  i++) {
    for (j = 0;  j < numeros.length;  j++) {
      if (todo.charAt(i) == numeros.charAt(j)) {
      break;
      }
    }
    if (j == numeros.length) {
    return true;
    }
  }
return false;
}

function CambioComa(num) {
  num2 = "";
  for (i = 0;  i < num.length;  i++) {
    if (num.charAt(i) == ",") {
      num2 = num2+".";
    }
    else {
      if (num.charAt(i) == " ") {
        num2 = num2;
      }
      else {
        num2 = num2+num.charAt(i);
      }
    }
  }
  return num2;
}

function Borrar() {
 document.forms[0].crea.value = "";
 document.forms[0].Unicrea.value = "uno";
 document.forms[0].eda.value = "";
 document.forms[0].sex.value = "Nada";
 document.forms[0].afro.checked = false;
 document.forms[0].result.value = "";
 document.forms[0].result1.value = "";
}
// -->