var timer_menu_switch;

function getElementsByClassName(className, tag, elm){
	var testClass = new RegExp("(^|\\\\s)" + className + "(\\\\s|$)");
	var tag = tag || "*";
	var elm = elm || document;
	var elements = (tag == "*" && elm.all)? elm.all : elm.getElementsByTagName(tag);
	var returnElements = [];
	var current;
	var length = elements.length;
	for(var i=0; i<length; i++){
		current = elements[i];
		if(testClass.test(current.className)){
			returnElements.push(current);
		}
	}
	return returnElements;
}


function popup(url, sirka, vyska) {
  return window.open(url,'jhguhsauihgr','top=30,left=30,width='+sirka+',height='+vyska);
}  
  
/*   cookies    */

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + '=';
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}

//priste uz napoveda zobrazena nebude
if (readCookie('prvni_nacteni_tourismu') != 1) {
  //neco provedeme abychom upoutali pozornost na menu
  //bud hned pri nacteni nebo s mirnym spozdenim
  
  //1-nechame nabehnout puntiky gif ze sirky
  //2-puntiky bounce efekt
  //3-nechame prolitnout menu v casovych intervalech ... volani funkce onslide nebo jak se to jmenuje
  //  s parametrem, start rollover nezrusi rollover, pokud je volana bez tohoto parametru casovac rolloveru je zrusen 
  
}
//createCookie('prvni_nacteni_radnicaku','1',1);



function v_popup_okne(url,sirka, vyska) {
  var sirka = (sirka == null) ? 1000 : sirka;
  var vyska = (vyska == null) ? 700 : vyska;

  return window.open(url, 'zdrojolcz221c8','width='+sirka+',height='+vyska+',menubar=no,location=yes,resizable=yes,scrollbars=yes,left=50,top=50');
}