function calculate(){
'use strict';
var total;
var ilosc = document.getElementById('ilosc').value;
var cena = document.getElementById('cena').value;
var podatek = document.getElementById('podatek').value;
var rabat = document.getElementById('rabat').value;
total = ilosc * cena;
podatek /= 100;
podatek++;
total *= podatek;
podatek = podatek / 100;
podatek = podatek + 1;
total = total * podatek;
total -= rabat;
document.getElementById('total').value = total;
return false;
}
function init(){
'use strict';
var theForm = document.getElementById('theForm');
theForm.onsubmit = calculate;
}
window.onload = init;
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