// ===================== MENU ========================
var timer, visibleId = 0;
var dom = document.getElementById ? true : false;
var ie4 = ((document.all) && (!dom)) ? true : false;
var ns4 = document.layers ? true : false;
var opera = navigator.userAgent.indexOf('Opera') != -1 ? true : false;
var dhtml = dom ? true : ie4 ? true : ns4 ? true : false;

// trida, ktera se priradi nadrazenemu elementu, pokud je otevrene menu
var parentHoverClass = 'hover';

function HideEl(element) {
	var el = document.getElementById(element);
	var elClass = el.parentNode.className;
	
	el.style.visibility = 'hidden';
	if (elClass==parentHoverClass) el.parentNode.className = '';
}

function Hide(element) { 
  timer = setTimeout("HideEl('" + element + "')",300);
}
	
function Show(element) {
  var el = document.getElementById(element);
  var elClass = el.parentNode.className;
  
  if (visibleId) HideEl(visibleId);
  visibleId = element;
  
  el.style.visibility = 'visible';
  el.parentNode.className = parentHoverClass;
  
  clearTimeout(timer);
}

function stopTimer()
{
  clearTimeout(timer);
}

function zobrazCenik(elm) {
	document.getElementById('bottom').style.display='none';
	document.getElementById('cenik').style.display='block';
	elm.style.display='none';
	document.getElementById('bottom').style.display='block';
}

function zobrazCeny(elm,pocet) {
	document.getElementById('bottom').style.display='none';
	for (i=1;i<=pocet;i++) {
		if (document.getElementById('cena'+i)) document.getElementById('cena'+i).style.visibility='visible';
	}
	elm.style.display='none';
	document.getElementById('bottom').style.display='block';
}

/* ========================= POPUP ============================== */
function openPopup(w) {
	window.open('popup.php?w='+w,'popup',' width='+w+', height=500, toolbar=no, location=no, directories=no, status=yes, menubar=no, scrollbars=yes, resizable=yes, copyhistory=no');
}

/* =================== DETAIL OBRAZKU ========================= */
function openImage(file) {
	window.open('image.php?file='+file,'detail',' width=200, height=200, toolbar=no, location=no, directories=no, status=yes, menubar=yes, scrollbars=yes, resizable=yes, copyhistory=no');
}

/* =================== DETAIL NOVINKY ========================= */
function openNovDetail(id) {
	window.open('novdetail.php?id='+id,'detail',' width=500, height=500, toolbar=no, location=no, directories=no, status=yes, menubar=yes, scrollbars=yes, resizable=yes, copyhistory=no');
}