function ESSOX_aktualizuj(typ)
{
    var o = document.getElementById('ESSOX_'+typ+'_bezurocneObdobi');
    if (o)
    {
        set_value('ESSOX_specialProduct', o[o.selectedIndex].value);
    }

    // nastavit odklad splatek!!!
    o = document.getElementById('ESSOX_'+typ+'_odkladSplatek');
    if (o)
    {
        var el = o[o.selectedIndex];
        var odklad = parseInt(el['innerHTML'], 10);

        if (isNaN(odklad))
        {
            odklad = 0;
        }

        set_value('ESSOX_odklad', odklad); // hodnota
        set_value('ESSOX_odkladSplatek', o[o.selectedIndex].value); // id
    }

    o = document.getElementById('productID'+typ);
    if (o)
    {
        o.checked = true;
    }

    return ESSOX_splatkyJS(typ, ESSOX_get('ESSOX_' + typ + '_akontace'), ESSOX_get('ESSOX_' + typ + '_pocetSplatek'), ESSOX_get('ESSOX_' + typ + '_bezurocneObdobi'));
}

function ESSOX_get(el) {
    if(document.getElementById(el)) {
        return (document.getElementById(el).type=="select") ? document.getElementById(el).options[document.getElementById(el).selectedIndex].value : document.getElementById(el).value;
    } else return false;
}

function setContent(el,res) {
    if (document.getElementById(el).textContent) document.getElementById(el).textContent = res;
    else document.getElementById(el).innerText = res;
}

function ESSOXpocitejRPSN(pocetSplatek,pujcka,splatka, odklad)
{
    rok = 365;
    d = new Date();
    pujcDen = d.getDate();
    pujcMes = d.getMonth();
    pujcRok = d.getFullYear();
    pujcDate = new Date();
    splDate = new Date();

    odklad = parseInt(odklad);

    pujcDate.setTime(0);
    splDate.setTime(0);
    splDate.setDate(15);
    /*
    splDate.setHours(0);
    pujcDate.setHours(0);
    */

    pujcDate.setFullYear(pujcRok);
    pujcDate.setMonth(pujcMes);
    pujcDate.setDate(pujcDen);

    aSplatka = new Array();
    cas = new Array();
    vysledek = 0;

    if (splatka*pocetSplatek < pujcka)
    {
        curp = -1;
    }
    else if (splatka*pocetSplatek == pujcka)
    {
        curp = 0;
    }
    else
    {
        for (i=0; i<pocetSplatek; i++)
        {
            aSplatka[i] = splatka;
            var splm = pujcMes + i + odklad + 1;
            var splr = pujcRok;

            splr += Math.floor(splm / 12);
            splm = splm % 12;

            splDate.setFullYear(splr);
            splDate.setMonth(splm);

            cas[i] = Math.floor((splDate - pujcDate)/86400000 + 0.5);
        }
        curp = Math.pow(2, 20);
        r = 1 / Math.pow(2,20);

        krok = curp;
        while (krok >= r)
        {
            vysledek = 0;
            for (i=0; i<cas.length; i++) // obe pole jsou setejna
            {
                vysledek += aSplatka[i]/Math.pow((1+curp), cas[i]/rok);
            }

            vysledek -= pujcka;

            krok = krok / 2;
            if (vysledek > 0)
            {
                curp = curp + krok;
            }
            else if (vysledek < 0)
            {
                curp = curp - krok;
            }
            else
            {
                break;
            }
        }
    }

    rpsn = curp*10000;
    return Math.round(rpsn)/100;

}


function ESSOX_splatkyJS(id,akontaceID,pocetSplatekID) {
    id = parseInt(id);
    castka = ESSOX_get('ESSOX_cena');
    chyba = "";
    eval('retVal = ESSOX_'+id+'_splatky(castka,akontaceID,pocetSplatekID)');

    if (retVal[2] < castka)
        chyba = "Maximální možná částka je " + retVal[2] + " Kč.";
    if (chyba!="")
    {
        retVal = new Array(0,0,0);
    }
    setContent('ESSOX_'+id+'_kalkulacka',(retVal[0]) ? retVal[0] +  ",- Kč/měs." : chyba);
    setContent('ESSOX_'+id+'_RPSN',(retVal[0]) ? "od " + retVal[1] +  " %" : "-");
    document.getElementById('ESSOX_tRPSN').value = retVal[1];
    document.getElementById('ESSOX_splatka').value = retVal[0];
    eval('akontace = ESSOX_'+id+'_akontace(akontaceID);');
    eval('pocetSplatek = ESSOX_'+id+'_pocetSplatek(pocetSplatekID);');
    document.getElementById('ESSOX_numberOfInstallments').value = pocetSplatek;
    document.getElementById('ESSOX_advancePercent').value = akontace;
    document.getElementById('ESSOX_predem').value = castka * 0.01 * akontace;
}

function set_zero(obj)
{
    o = document.getElementById(obj);

    if (o)
    {
        o.selectedIndex = 0;
    }
}

function set_value(obj, val)
{
    o = document.getElementById(obj);

    if (o)
    {
        o.value = val;
    }
}

function Numbers(e)
{
    e.value=e.value.replace(/[^0-9]/g, '');
    /*
    var keynum;
    var keychar;
    var numcheck;
    var retval = true;

    if(window.event) // IE
    {
        keynum = e.keyCode;
    }
    else if(e.which) // Netscape/Firefox/Opera
    {
        keynum = e.which;
    }

    if (keynum == 13 || keynum == 8 || keynum == 9 || keynum == 46
        || keynum == 37 || keynum == 38 || keynum == 39 || keynum == 40
        || (keynum >=96 && keynum <= 105)
        || e.altKey || e.ctrlKey || e.metaKey
        )
    {
        retval = true;
    }
    else
    {
        keychar = String.fromCharCode(keynum);

        numcheck = new RegExp(re);
        retval = numcheck.test(keychar);
    }
    return retval;
    */
}

function setsplrpsn(b, ns, nr, ys, yr)
{
    if (b)
    {
        document.getElementById('splatka').innerHTML = ys;
        document.getElementById('rpsn').innerHTML = yr;
        document.getElementById('pojisteni').innerHTML = 'Ano';
    }
    else
    {
        document.getElementById('splatka').innerHTML = ns;
        document.getElementById('rpsn').innerHTML = nr;
        document.getElementById('pojisteni').innerHTML = 'Ne';
    }
}