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 = 3;

function show(menu_item)
{
  document.getElementById("podmenu" + menu_item).style.visibility = "visible";

}

function hide(menu_item)
{
  document.getElementById("podmenu" + menu_item).style.visibility = "hidden";

}

function RozbalKolekce(id, pocet) {
	
	
	if (document.getElementById("kolekce"+id).style.display=='block') {
		document.getElementById("kolekce"+id).style.display='none';
		document.getElementById("kolekce-a"+id).setAttribute("class", "");

	}
	else {
		for (var i=1; i<=pocet; i++) {
			document.getElementById("kolekce"+i).style.display='none';
			document.getElementById("kolekce-a"+i).setAttribute("class", "");
		}
		document.getElementById("kolekce"+id).style.display='block';
		document.getElementById("kolekce-a"+id).setAttribute("class", "selected");

	

	}
	
	//alert(id+"  "+pocet);
}
//vypnout/zapnout DIVy **************************************
function toggle(cilovyObjekt, vyvolavac) {
	Effect.toggle(cilovyObjekt, 'blind', { duration: 0.2 });
	if (document.getElementById(cilovyObjekt).style.display == "none")
		document.getElementById(vyvolavac).style.backgroundImage = "url(../img/yellow_down.jpg)";
	else 
		document.getElementById(vyvolavac).style.backgroundImage = "url(../img/yellow_up.jpg)";
}