function schovej(){
  document.getElementById('dva').style.display = 'none';
  document.getElementById('tri').style.display = 'none';
  document.getElementById('ctyri').style.display = 'none';
  document.getElementById('pet').style.display = 'none';
  document.getElementById('sest').style.display = 'none';
  document.getElementById('sedm').style.display = 'none';
  document.getElementById('osm').style.display = 'none';
  document.getElementById('devet').style.display = 'none';
}

function zobraz(co){
  if(document.getElementById(co).style.display != ''){
    document.getElementById(co).style.display = '';
  }
}

function sfoto(){
  document.getElementById('tfoto').style.display = '';
  document.getElementById('pfoto').style.display = 'none';
}

function pfoto(){
  document.getElementById('tfoto').style.display = 'none';
  document.getElementById('pfoto').style.display = '';
}

function zobrazg(){
  document.getElementById('zgalerku').style.display = 'none';
  document.getElementById('fgalerka').style.display = '';
}

function skrytg(){
  document.getElementById('zgalerku').style.display = '';
  document.getElementById('fgalerka').style.display = 'none';
}

function otevri(co,x,y){
  var dovnitr = "width="+x+"; height="+y+"; resizable=no";
  window.open(co, "", dovnitr);
  return false;
}

function makeRequest(url, parameters) {
  var parameters = "kraj="+document.getElementById('kraj').value;
  http_request = false;
  if (window.XMLHttpRequest) { // Mozilla, Safari,...
     http_request = new XMLHttpRequest();
     if (http_request.overrideMimeType) {
     	// set type accordingly to anticipated content type
        //http_request.overrideMimeType('text/xml');
        http_request.overrideMimeType('text/html');
     }
  } 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('Cannot create XMLHTTP instance');
     return false;
  }
  http_request.onreadystatechange = alertContents;
  http_request.open('POST', url, true);
  http_request.setRequestHeader("Content-Type", "application/x-www-form-urlencoded; charset=windows-1250");
  http_request.send(parameters);
  http_request.send(null);
}

function alertContents() {
  if (http_request.readyState == 4) {
     if (http_request.status == 200) {
        //alert(http_request.responseText);
        result = http_request.responseText;
        document.getElementById('myspan').innerHTML = result;            
     } else {
        alert('There was a problem with the request.');
     }
  }
}