function searchCat(){
  var kateg="";
  for (var c = 0; c < document.form.length; c++) {
    if (document.form.elements[c].name == 'kateg[]') {
      if(document.form.elements[c].checked){kateg=kateg+document.form.elements[c].value+";";}
   }
   }
document.location.href="user_overview.php?kateg="+kateg
   +"&init=<?=$init?>";

}

   var http_request = false;

function makeRequest(url) {

    http_request = false;

    if (window.XMLHttpRequest) { // Mozilla, Safari,...
        http_request = new XMLHttpRequest();
        if (http_request.overrideMimeType) {
            http_request.overrideMimeType('text/xml');
        }
    } else if (window.ActiveXObject) { // IE
        try {
            http_request = new ActiveXObject("Msxml2.XMLHTTP");
        } catch (e) {
            try {
            http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
        }
    }

    if (!http_request) {
        alert('Giving up :( Cannot create an XMLHTTP instance');
        return false;
    }
    http_request.onreadystatechange = alertContents;
    http_request.open('GET', url, true);
    http_request.send(null);

}

function alertContents() {

    if (http_request.readyState == 4) {
        if (http_request.status == 200) {
        selChange();
        } else {
            alert('There was a problem with the request.');
        }
    }

}


function changeS(){
   hiddenFrame.location.href='functions/changeSelect.php?land='+document.form.bland.value+'&cb3stadt='+document.form.cb3stadt.value;
   }