var xmlHttp

function findObce(psc)
{
  //remove options
  var i;   
  for(i=document.pscObce.id_obec.options.length-1;i>=0;i--)
  {
    document.pscObce.id_obec.remove(i);
  }

	if (psc.lenght == 0 || psc == "%")
	{
		document.pscObce.id_obec.options[0] = new Option('Nic', 'nic');
		return;
	}
	xmlHttp = GetXmlHttpObject();
	if (xmlHttp == null)
	{
		alert ("Tvůj internetový prohlížeč nepodporuje AJAX!");
		return;
	}
	var url="/AJAX/getObce.php";
	url=url+"?psc="+psc;
	url=url+"&sid="+Math.random();
	xmlHttp.onreadystatechange = stateChanged;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
}

function stateChanged()
{
	if (xmlHttp.readyState == 4)
	{
	  var vysl5 = xmlHttp.responseText;
	  
	  
	  if (vysl5 == "Error")
	  {
      document.pscObce.id_obec.options[0] = new Option("Nic nenalezeno", "1");
      document.pscObce.id_obec.options[1] = new Option("", "");
    }
    else
    {
      var exp_obce = vysl5.split(";");
      var pocet = exp_obce.length;
      var index;
      for (index=0; index < exp_obce.length; index = index+1)
      {
        var splitted = exp_obce[index].split("|");      
        document.pscObce.id_obec.options[index] = new Option(splitted[1], splitted[0]);
      }
      //document.pscObce.id_obec.options[pocet] = new Option("", "");
    }
  }
}

function GetXmlHttpObject()
{
	var xmlHttp=null;
	try
	{
		// Firefox, Opera 8.0+, Safari
		xmlHttp=new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer
		try
		{
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	return xmlHttp;
}