function processRequest() {
 if (httpRequest.readyState == 4) {
  if(httpRequest.status == 200) {
   var s = httpRequest.responseText;
//   alert(s);
   var poc; var i; var j;
   poc = 0; i = -1; 

   do {
   document.forms[1].nabidka.length = poc+1;

   i++;
   j=s.indexOf(";",i);
//   alert('!'+s.substring(i,j)+'!');
   document.forms[1].nabidka.options[poc].value = s.substring(i,j);
   i = j+1; j=s.indexOf(";",i);
   document.forms[1].nabidka.options[poc].text = s.substring(i,j);
//   alert('?'+s.substring(i,j)+'?');

   poc++;
   i = j+1; j=s.indexOf(";",i);
   } while (j!=-1);

   document.forms[1].nabidka.length = poc+1;
   document.forms[1].nabidka.options[poc].value = "";
   document.forms[1].nabidka.options[poc].text = "Všechny typy slev";
   document.forms[1].nabidka[poc].selected = true;

  } else {
   alert("Error: "+ httpRequest.status +"/"+ httpRequest.statusText);
  }
 }
}

function fcetypslevy() {
  s = document.URL;
  i = s.indexOf(".cz");
  s = s.substring(0,i+3)
//alert(s);
  var url = s+"/value.php?lokalita="+document.forms[1].lokalita.value;
//alert(url);
  
  if (window.ActiveXObject) {
   httpRequest = new ActiveXObject("Microsoft.XMLHTTP");
  } else {
   httpRequest = new XMLHttpRequest();
  }
  httpRequest.open("GET", url, true);
  httpRequest.onreadystatechange= function () { processRequest(); } ;
  httpRequest.send(null);
}