function number_format (number, decimals, dec_point, thousands_sep) {
  number = (number + '').replace(/[^0-9+\-Ee.]/g, '');
  var n = !isFinite(+number) ? 0 : +number,
    prec = !isFinite(+decimals) ? 0 : Math.abs(decimals),
    sep = (typeof thousands_sep === 'undefined') ? ',' : thousands_sep,
    dec = (typeof dec_point === 'undefined') ? '.' : dec_point,
    s = '',
    toFixedFix = function (n, prec) {
      var k = Math.pow(10, prec);
      return '' + Math.round(n * k) / k;
    };
  // Fix for IE parseFloat(0.55).toFixed(0) = 0;
  s = (prec ? toFixedFix(n, prec) : '' + Math.round(n)).split('.');
  if (s[0].length > 3) {
    s[0] = s[0].replace(/\B(?=(?:\d{3})+(?!\d))/g, sep);
  }
  if ((s[1] || '').length < prec) {
    s[1] = s[1] || '';
    s[1] += new Array(prec - s[1].length + 1).join('0');
  }
  return s.join(dec);
}

function isNumber(n) {
  return !isNaN(parseFloat(n)) && isFinite(n);
}

function check_field(p_kusy) {
    if(isNumber(p_kusy) == false || kusy < 1)
    {
        document.getElementById('add_ks_field').value = 1;
    }
}

function doprava_update_field(kosik_cena, kosik_hmotnost, hmotnost, cena, kusy) {

  if(isNumber(kusy) == false || kusy < 1)
  {
      kusy=1;
  }
  document.getElementById("c_cena").innerHTML = number_format((kusy * cena), 0, ",", ".");
}

var kosikInfo = $('basket_info');
var biFx = new Fx.Slide('basket_info');
        
function kosikAdd(bedynka)
{
    var myRequest = new Request({
        url: '/updateKosik.php',
        method: 'post',
        data: 'add_pr_id=' + $('add_product_id').get('value') + '&add_ks_item=' + $('add_ks_field').get('value') + '&max_ks=' + $('add_max_ks').get('value') + '&bedynka=' + bedynka,
        onRequest: function(){
            //
        },
        onSuccess: function(responseText){
            var myScrollFx = new Fx.Scroll(window, {duration: 800,wait: true}).toElement('cookies_info');
            updateCCena();
            $('basket_info_text').set('html', responseText);
            if(deal_flag == 1)
            {
                $('deal_flag').setStyle('top', '222px');
            }
            kosikInfo.setStyle('display', 'block');
            biFx.hide().slideIn();
            if(deal_flag == 1)
            {
                var flagFx = new Fx.Tween('deal_flag');
                flagFx.start('top', 305);
            }
        },
        onFailure: function(){
            //
        }
    });
    
    // and to send it:
    myRequest.send();
}

function updateCCena()
{
    var myRequest2 = new Request({
        url: '/updateCCena.php',
        method: 'post',
        onRequest: function(){
            //
        },
        onSuccess: function(responseText){
            $('kosik_celkem').set('html', responseText);
        },
        onFailure: function(){
            //
        }
    });
    
    // and to send it:
    myRequest2.send();
    
    var myRequest3 = new Request({
        url: '/updateCCena.php?kusy=1',
        method: 'post',
        onRequest: function(){
            //
        },
        onSuccess: function(responseText){
            $('kosik_ckusy').set('html', responseText);
        },
        onFailure: function(){
            //
        }
    });
    
    // and to send it:
    myRequest3.send();
}

function closeInfo()
{
    biFx.slideOut();
    if(deal_flag == 1)
    {
        var flagFx = new Fx.Tween('deal_flag');
        flagFx.start('top', 222);
    }
}

function kontrola(bedynka)
{
    var max_ks = document.getElementById('add_max_ks').value;
    var field_ks = document.getElementById('add_ks_field').value;
    
    max_ks = max_ks*1;
    field_ks = field_ks*1;
    
    if(max_ks < field_ks)
    {
        alert("Bohužel máme skladem pouze " + max_ks + " kusů.");
        return false;
    }
    
    kosikAdd(bedynka);
    
    is_vyber_ok = true;
    
    return false;
}