function vyberOblast(){
     var url = '/ajax.php?oblast='+document.getElementById("oblast").value;

     if (url != 0)
     {
        if (window.ActiveXObject)
        {
          httpRequest = new ActiveXObject("Microsoft.XMLHTTP");
        }
        else
        {
          httpRequest = new XMLHttpRequest();
        }
        httpRequest.open("GET", url, true);
        httpRequest.onreadystatechange= function () {processRequest(); } ;
        httpRequest.send(null);
      }
      else
      {
        document.getElementById("mistoZobrazeni").innerHTML = "";

      }
}

function processRequest()
{
  if (httpRequest.readyState == 4)
  {
    if(httpRequest.status == 200)
    {
        vynuluj();
        stringArray = httpRequest.responseText.split(";");
        for(var loopIndex = 0; loopIndex < stringArray.length; loopIndex++)
        {
		data = stringArray[loopIndex].split("#");
		pridej(data[0],data[1]);
        }

    }
    else
    {
        alert("Chyba pri nacitani stanky"+ httpRequest.status +":"+ httpRequest.statusText);
    }
  }
}

function pridej(id,nazev) {
        var option = document.createElement("OPTION");
	if(window.ActiveXObject)
		document.lokalita.vinarstvi.add(option);
        else	document.lokalita.vinarstvi.add(option, null);
        option.innerHTML=nazev;
	option.value=id;
}

function vynuluj() {
        document.lokalita.vinarstvi.length = 0;
        document.lokalita.vinarstvi.disabled = false;
}

function loading() {
        vynuluj();
        var option = document.createElement("OPTION");

	if(window.ActiveXObject)
		document.lokalita.vinarstvi.add(option);
        else	document.lokalita.vinarstvi.add(option, null);

        option.innerHTML="nacitam";
        document.lokalita.vinarstvi.disabled = true;
}