// JavaScript Document
function uveryZastavaNemovitosti() {
  var cenaNemovitosti = document.getElementById('cena_nemovitosti');
  var muzeteZiskat    = document.getElementById('muzeme_ziskat');
  var temp;
  try {
    temp = parseInt(nechatCisla(cenaNemovitosti.value)) * 0.9;
  }
  catch (ex) {
    temp = 'Špatná hodnota';
  }
  cenaNemovitosti.value = penize(cenaNemovitosti.value); 
  muzeteZiskat.value = penize(temp);
}


function spocitejUver(vyseUveru, dobaSplatnosti, urok, vysledek) {
  vysledek.value = penize(pmt(vyseUveru,urok/12/100,dobaSplatnosti*12));  
}

function spocitejUdrzbu(najem,udrzbaPole) {
  udrzbaPole.value = penize(nechatCisla(najem)*0.15);
}

function minimalniPrijem(vysePujcky,mesicniSplatka) {
  var plat = 6300;
  var intercept = -2.34700860696087;
  var volume1   = -0.0000000129182463308116;
  var volume2   = -0.00000000000000219231507033946;
  var volume3   = 0.000000000000000000000156806521154338;
  var lnvolume  = 0.203721086246722;
  var regresniFce = intercept+volume1*vysePujcky+volume2*Math.pow(vysePujcky,2)+volume3*Math.pow(vysePujcky,3)+lnvolume*Math.log(vysePujcky);
  if (mesicniSplatka / regresniFce <= plat) return plat; else return Math.ceil(mesicniSplatka / regresniFce);

}