function amort2(form){
  pricePV2=(form.pricePV2.value);
  priceN2=(form.priceN2.value);
  pricePMT2=(form.pricePMT2.value);

  pricePV2=pricePV2.toString().replace('.','');
  priceN2=priceN2.toString().replace('.','');
  pricePMT2=pricePMT2.toString().replace('.','');

  pricePV2=pricePV2.toString().replace(',','.');
  priceN2=priceN2.toString().replace(',','.');
  pricePMT2=pricePMT2.toString().replace(',','.');

  pricePV2=eval(pricePV2);
  priceN2=eval(priceN2);
  pricePMT2=eval(pricePMT2);

    if(pricePMT2<=pricePV2/priceN2){alert("Valor presente não pode ser maior que total a pagar.\nConfira a digitação.");}
    if(pricePMT2<=pricePV2/priceN2){pricePMT2=0;}
	if(pricePMT2>=pricePV2){alert("A taxa será astronômica.\nConfira a digitação.");}
    if(pricePMT2>=pricePV2){pricePMT2=0;}

    trap=Math.random();
      priceI2=.00001;
      priceTeste=pricePV2*(((priceI2/100)*(Math.pow((1+priceI2/100),(priceN2-1))))/(Math.pow((1+priceI2/100),priceN2)-1));
      for(priceI2==.00001;pricePMT2>priceTeste;priceI2=priceI2+.00001){priceTeste=pricePV2*(((priceI2/100)*(Math.pow((1+priceI2/100),(priceN2-1))))/(Math.pow((1+priceI2/100),priceN2)-1));}
      priceTaxa=priceI2-.00001;
      priceTaxa=Math.round(priceTaxa*10000)/10000;
	  
      form.priceTaxa.value=priceTaxa+"%";
	  	  
    trap=Math.random();
      priceI2=.00001;
      priceTeste1=pricePV2*(((priceI2/100)*(Math.pow((1+priceI2/100),priceN2)))/(Math.pow((1+priceI2/100),priceN2)-1));
      for(priceI2==.00001;pricePMT2>priceTeste1;priceI2=priceI2+.00001){priceTeste1=pricePV2*(((priceI2/100)*(Math.pow((1+priceI2/100),priceN2)))/(Math.pow((1+priceI2/100),priceN2)-1));}
      priceTaxa1=priceI2-.00001;
      priceTaxa1=Math.round(priceTaxa1*10000)/10000;
	  
      form.priceTaxa1.value=priceTaxa1+"%";
}