/*!
 * Tonez Calc 0.1 with jQuery 1.4.2
 * Copyright 2010, FT Sun s.r.o.
 * Autor: Václav Fiala [cheezell@gmail.com]
 */

function is_numeric(mixed_var) {
  return !isNaN(mixed_var * 1);  
}

function formatNumber(num) {
  var n = num.toString();
  var nums = n.split('.');
  var newNum = "";
  if (nums.length > 1) {
    var dec = nums[1].substring(0,2);
    newNum = nums[0] + "," + dec;
  }
  else
  {
    newNum = num;
  }
  return newNum;
}

function calcWorking() {
  var rok = new Array('roku','rok','roky','roky','roky','let');
  var a1 = $("input[name=spotreba100]").val().replace(",",".");
  var a2 = $("input[name=cena_benzinu]").val().replace(",",".");
  var str = "benzínu";
  var a3 = $("input[name=spotrebakg]").val().replace(",",".");
  var a4 = $("input[name=cenakg]").val().replace(",",".");
  var a5 = $("input[name=kmzarok]").val().replace(",",".");
  var a6 = $("input[name=naklady]").val().replace(",",".");
  var a8 = (a1*a2)-(a3*a4);
  var a9 = (a5/100)*a1*a2;
  var a10 = (a5/100)*a3*a4;
  var a11 = a9-a10;
  var a12 = a6/a11;
  $(".span1").html(formatNumber(a5/a12)+" Km");
  $(".span2").html(formatNumber(a4)+" Kč");
  $("input[name=uspora]").val(formatNumber(a8)+" Kč");
  $("input[name=nakladyrok]").val(formatNumber(a9)+" Kč");
  $("input[name=nakladyrokcng]").val(formatNumber(a10)+" Kč");
  $("input[name=usporarok]").val(formatNumber(a11)+" Kč");
  $("input[name=amortizaceza]").val(formatNumber(a12));
  $(".stepTwo").fadeIn();
}

function calcRemove() {
  $("input[name=spotreba100]").val("8");
  $("input[name=cena_benzinu]").val("32,00");
  $("input[name=kmzarok]").val("55000");
  $("input[name=naklady]").val("85000,00");
  $("input[name=cenakg]").val("22,00");
  $("input[name=spotrebakg]").val("5,5");
  $("input[name=uspora]").val("");
  $("input[name=nakladyrokcng]").val("");
  $("input[name=nakladyrok]").val("");
  $("input[name=usporarok]").val("");
  $("input[name=amortizaceza]").val("");
  $(".span1").empty();
  $(".span2").empty();
  $(".stepTwo").fadeOut();
}