function ajax(url)
   {
  var XMLHttpRequestObject = false;
      if (window.XMLHttpRequest) {
       XMLHttpRequestObject = new XMLHttpRequest();
      }
      else if (window.ActiveXObject) {
       XMLHttpRequestObject = new ActiveXObject("Microsoft.XMLHTTP");
      }

      if(XMLHttpRequestObject) {
       XMLHttpRequestObject.open("GET", url, true);
       XMLHttpRequestObject.onreadystatechange = function()
       {
        if (XMLHttpRequestObject.readyState == 1) {
     var element4 = document.getElementById("rez_misto");
         element4.innerHTML = "<select class='uv_sel' name='misto'><option>Načítám...</option></select>";
        }
        if (XMLHttpRequestObject.readyState == 4 && XMLHttpRequestObject.status == 200)
        {
     var element4 = document.getElementById("rez_misto");
         element4.innerHTML = XMLHttpRequestObject.responseText;
         //alert(XMLHttpRequestObject.responseText);
        }
       }
      XMLHttpRequestObject.send(null);
    }
   }
   
function show_tb(t_b) 
   {
    if (document.getElementById(t_b).style.display == 'none')
     {
        //if (navigator.appName == "Microsoft Internet Explorer" && parseInt(navigator.appVersion) >= 4)
            document.getElementById(t_b).style.display = 'block';
        /*else
            document.getElementById(t_b).style.display = 'table-row-group';*/
    }
    else
        document.getElementById(t_b).style.display = 'none';
    }
    
function closer(menu) 
   {
    var a;
    for (i=0;i<menu.length;i++)  {
        a= menu[i];
        if(a !='')
        document.getElementById(a).style.display = 'none';
        }
    }
    
function my_menu(t_b, menu) {
    closer(menu);
    show_tb(t_b);
}

function anketor(odp) {
  document.getElementById('anketor').odpoved.value=odp;
  document.getElementById('anketor').submit();
}

function show_map() {
  map= '/map.php?from=' + document.getElementById('myf').from.value + '&go=' + document.getElementById('myf').go.value + '&reg=' + document.getElementById('myf').reg.value;
  window.open( map ,'_blank','width=800,height=800,resizable=yes,left='+(screen.availWidth/2-400)+',top='+(screen.availHeight/2-400)+''); 
  return false;
}

function AddFavorite(linkObj,addUrl,addTitle)
{
  if (document.all && !window.opera)
  {
    window.external.AddFavorite(addUrl,addTitle);
    return false;
  }
  else if (window.opera && window.print)
  {
    linkObj.title = addTitle;
    return true;
  }
  else if ((typeof window.sidebar == 'object') && (typeof window.sidebar.addPanel == 'function'))
  {
    if (window.confirm('Přidat oblíbenou stránku jako nový panel?'))
    {
      window.sidebar.addPanel(addTitle,addUrl,'');
      return false;
    }
  }
  window.alert('Po potvrzení stiskněte CTRL-D,\nstránka bude přidána k vašim oblíbeným odkazům.');
  return false;
}