function adCalc(form) {

var ok = 0;


var price = form.price.value;

var afue = form.afue.value;

var denominator = 1000000 / 138690;

var decimalfract = form.decimalfract.value;

form.decimalfract.value = (price * denominator) / (afue / 100);


var pricegas = form.pricegas.value;

var afuegas = form.afuegas.value;

var denominatorgas = 1000000 / 100000;

var decimalfractgas = form.decimalfractgas.value;

form.decimalfractgas.value = (pricegas * denominatorgas) / (afuegas / 100);


}