function getObj(id) {
	if (typeof id != "string") return id;  
	else return document.getElementById(id);
}

function displayObj(id,show) {
	obj = getObj(id);
	obj.style.display = show;
}

function isDisplayedObj(id) {
	obj = getObj(id);
	return (obj.style.display == 'block') || (obj.style.display == 'inline');
}

function switchMnu(id_key) {
	obj = getObj('sMnu_'+id_key);
	if (obj.className=='on') {
		obj.className='off';
	}	else {
		obj.className='on';
	}
	return false;
}

function pageInit() {
}

var DOM = (document.getElementById); // detekce JavaScriptu

function openSmallWindow(url) {
	window.open(url,null, "height=200,width=400,status=no,toolbar=no,menubar=no,location=no,resizable=yes,scrollbars=yes");
	return false;
}