function pozadavek()
    {
        var http_request = false;
        var string = document.getElementById('hledaneSlovo').value;
        var request = "slovo="+string;

        if (window.XMLHttpRequest)
        {
          http_request = new XMLHttpRequest();
        } 
        else
        { 
          if (window.ActiveXObject)
          {
            try
            {
                http_request = new ActiveXObject("Msxml2.XMLHTTP");
            } 
            catch (eror)
            {
              http_request = new ActiveXObject("Microsoft.XMLHTTP");
            }
          }
        }
        http_request.onreadystatechange = function() { zpracuj(http_request); };
        http_request.open('POST', '/naseptavac.php', true);
        http_request.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
        http_request.send(request);
   }

    function zpracuj(http_request)
    {
        if (http_request.readyState == 4)
        {
            if (http_request.status == 200)
            {
                var mistoZobrazeni=document.getElementById("naseptavac");
                mistoZobrazeni.innerHTML = http_request.responseText; 
            }
            else
            {
              alert(http_request.statusText); 
            }
        }
    }