// JavaScript Document
  function processRequest(where)
      {
        if (httpRequest.readyState == 4)
        {
          if(httpRequest.status == 200)
          {    
            var elem = document.getElementById(where);
            //elem.innerHTML = '';
            elem.innerHTML = httpRequest.responseText;
          }
          else
          {
              alert("Chyba pri nacitani stanky "+ httpRequest.status +":"+ httpRequest.statusText);
          }
        }
      }

      function zmenObsah(what,where)
      {
      
        var elem = document.getElementById(where);
        elem.innerHTML = '<p> Načítá se... </p>';
        
        // z ceho nacitat obsah
        url = what;      
        
        if (window.ActiveXObject)
        {
          httpRequest = new ActiveXObject("Microsoft.XMLHTTP");
        }
        else
        {
          httpRequest = new XMLHttpRequest();
        }
              
        httpRequest.open("GET", url, true);
        httpRequest.onreadystatechange= function () {processRequest(where); } ;
        httpRequest.send(null);        
      }