function viewkalendar(rok, id_pokoje){
            //*var id_rezervace = document.getElementById("id_hotel_rezervace").value;
            document.getElementById('zobrkalendar').innerHTML = "načítám obsazenost pokoje ..."
            akceAjax("/__template/funkce/rezervace/scr_rezervace.php", "akce=zobrkalendar&rok="+rok+"&id_pokoje="+id_pokoje+"&id_rezervace=");
}

function overit(){
    var d_od = document.getElementById('datumod').value;
    var d_do = document.getElementById('datumdo').value;

    var id_pokoje = '';
    var odd = '';

    var poc = document.getElementById('pocetPokoj').value;

    for (var i = 0; i < poc; i++) {
      if (document.getElementById('id_hotel_pokoje'+i))
          {
                if (document.getElementById('id_hotel_pokoje'+i).checked)
                    {
                        id_pokoje += odd + document.getElementById('id_hotel_pokoje'+i).value;
                        odd = ',';
                    }
          }
    }
    akceAjax("/__template/funkce/rezervace/scr_rezervace.php", "akce=overtiobsazenost&datumod="+d_od+"&datumdo="+d_do+"&id_pokoje="+id_pokoje);
}

function closeObsazenost(){
    document.getElementById('zobrkalendar').innerHTML = '';
}

function akceAjax(sourcephp, akce) {
    var http_request = false;

    var request = akce+'&t='+Date.parse(Date());

    if (window.XMLHttpRequest) {
        http_request = new XMLHttpRequest();
    } else if (window.ActiveXObject) {
        try {
          http_request = new ActiveXObject("Msxml2.XMLHTTP");
        } catch (error) {
          http_request = new ActiveXObject("Microsoft.XMLHTTP");
        }
    }
    http_request.onreadystatechange = function() {returnValidate(http_request);};
    http_request.open('POST', sourcephp, true);
    http_request.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
    http_request.send(request);
}

function returnValidate(http_request) {

   //* alert(http_request.responseText)

    if (http_request.readyState == 4) {


        if (http_request.status == 200) {

         //*   alert(http_request.responseText)

            var pTT = http_request.responseText.split("#!");

            if (pTT[0] == 'zobrkalendar'){
                document.getElementById('zobrkalendar').innerHTML = pTT[1];
            }

            if (pTT[0] == 'overitobsazenost'){
                if (pTT[1] == "cena"){
                    var pp = pTT[2].split("#");
                    document.getElementById('divpocetnoci').innerHTML = pp[1];
                    document.getElementById('divcena').innerHTML = pp[0];
                    document.getElementById('overeno').value = pp[1];
                    document.getElementById('pocetnoci').value = pp[1];
                    document.getElementById('cena').value = pp[0];
                    document.getElementById('divoverit').innerHTML = '';
                    document.getElementById('divovereno').style.display = 'none';
                }
                else{
                    document.getElementById('divoverit').innerHTML = pTT[1];
                    document.getElementById('divpocetnoci').innerHTML = '';
                    document.getElementById('divcena').innerHTML = '';
                    document.getElementById('overeno').value = '';
                    document.getElementById('pocetnoci').value = '';
                    document.getElementById('cena').value = '';
                    document.getElementById('divovereno').style.display = '';
                }
            }

       





        } else {
            alert('Chyba');
        }
    }
}