function addBookmark(title,url) {
	if (window.sidebar) {
		window.sidebar.addPanel(title, url,"");
	} else if( document.all ) {
		window.external.AddFavorite( url, title);
	} else if( window.opera && window.print ) {
		return true;
	}
}

function okno(soubor,sirka,vyska)  {
	window.open(soubor,'','toolbar=no,scrollbars=yes,location=no,status=no,width='+sirka+',height='+vyska+',resizable=1')
}

// ------------------------------------------ zmena tridy
function Aktivni(id)  {
  document.getElementById(id).className = "aktivni";
}

function Deaktivni(id)  {
  document.getElementById(id).className = "";
}

// ------------------------------------------ funkce pro rozbalovaci menu
var PocetMenu = 2;

function Show(CisMenu)    {
  var submenu = document.getElementById('submenu'+CisMenu);
  submenu.style.visibility="visible";
}

function Hide() {
  var menu, i;
  for(i=1; i<=PocetMenu; i++) {
    var submenu = document.getElementById('submenu'+i);
    submenu.style.visibility="hidden";
  }
}