browserName=navigator.appName;
browserVer=parseInt(navigator.appVersion);
if (browserVer >=3)
        version="3";
else
        version="2";
if (version=="3")
{

btn = new Array();

btn01on = new Image(56,37);
btn01off = new Image(56,37);
btn02on = new Image(124,37);
btn02off = new Image(124,37);
btn03on = new Image(118,37);
btn03off = new Image(118,37);
btn04on = new Image(50,37);
btn04off = new Image(50,37);
btn05on = new Image(116,37);
btn05off = new Image(116,37);
btn06on = new Image(43,37);
btn06off = new Image(43,37);
btn07on = new Image(43,37);
btn07off = new Image(43,37);
btn08on = new Image(46,37);
btn08off = new Image(46,37);
btn09on = new Image(97,37);
btn09off = new Image(97,37);
btn10on = new Image(58,37);
btn10off = new Image(58,37);
btn11on = new Image(56,37);
btn11off = new Image(56,37);

btn21on = new Image(166,29);
btn21off = new Image(166,29);
btn22on = new Image(166,29);
btn22off = new Image(166,29);
btn23on = new Image(166,29);
btn23off = new Image(166,29);

btn91on = new Image(30,10);
btn91off = new Image(30,10);


btn01on.src = "images/nav/history_on.gif";
btn01off.src = "images/nav/history_off.gif";
btn02on.src = "images/nav/members_on.gif";
btn02off.src = "images/nav/members_off.gif";
btn03on.src = "images/nav/calendar_on.gif";
btn03off.src = "images/nav/calendar_off.gif";
btn04on.src = "images/nav/events_on.gif";
btn04off.src = "images/nav/events_off.gif";
btn05on.src = "images/nav/database_on.gif";
btn05off.src = "images/nav/database_off.gif";
btn06on.src = "images/nav/links_on.gif";
btn06off.src = "images/nav/links_off.gif";
btn07on.src = "images/nav/news_on.gif";
btn07off.src = "images/nav/news_off.gif";
btn08on.src = "images/nav/views_on.gif";
btn08off.src = "images/nav/views_off.gif";
btn09on.src = "images/nav/merchandising_on.gif";
btn09off.src = "images/nav/merchandising_off.gif";
btn10on.src = "images/nav/reciepes_on.gif";
btn10off.src = "images/nav/reciepes_off.gif";
btn11on.src = "images/nav/home-en_on.gif";
btn11off.src = "images/nav/home-en_off.gif";

btn21on.src = "images/nav/past_events_on.gif";
btn21off.src = "images/nav/past_events_off.gif";
btn22on.src = "images/nav/events_www_on.gif";
btn22off.src = "images/nav/events_www_off.gif";
btn23on.src = "images/nav/photogallery_on.gif";
btn23off.src = "images/nav/photogallery_off.gif";

btn91on.src = "images/cesky_on.gif";
btn91off.src = "images/cesky_off.gif";

}

function on(imgName) {
   if (version=="3") {
        document[imgName].src = eval(imgName + "on.src");
        }		}

function off(imgName) {
   if (version=="3") {
        document[imgName].src = eval(imgName + "off.src");
        }
		}

function show_layer(lname, flag)
{
  /* Hide All */
 // alert('d');

   var layer;
   if( navigator.appName.indexOf('Netscape') == -1 ) { layer = document.all[lname]; }
 
  if (lname == '')  
    return;
    
  if (navigator.appName.indexOf('Netscape') != -1) 
      document.getElementById(lname).style.visibility = (flag == 1) ? 'visible' : 'hidden';

  else
  
      layer.style.visibility = (flag == 1) ? 'visible' : 'hidden';
   
}