function ClientSnifferJr()
{
	this.ua = navigator.userAgent.toLowerCase();

	this.major = parseInt(navigator.appVersion);
	this.minor = parseFloat(navigator.appVersion);

	this.nav = (
	(this.ua.indexOf('mozilla')!=-1)
	&& ((this.ua.indexOf('spoofer')==-1)
	&& (this.ua.indexOf('compatible') == -1))
	);
	this.nav2 = (this.nav && (this.major == 2));
	this.nav3 = (this.nav && (this.major == 3));
	this.nav4 = (this.nav && (this.major == 4));
	this.nav4up = (this.nav && (this.major >= 4));
	this.nav5 = (this.nav && (this.major == 5)); 
	this.nav5up = (this.nav && (this.major >= 5));	 
	
	this.ie = (this.ua.indexOf("msie") != -1);
	this.ie3 = (this.ie && (this.major == 2));
	this.ie4 = (
	this.ie && (this.major == 4)
	&& (this.ua.indexOf("msie 5.0")==-1)
	);
	this.ie4up = (this.ie	&& (this.major >= 4));
	this.ie5 = (
	this.ie && (this.major == 4)
	&& (this.ua.indexOf("msie 5.0")!=-1)
	);
	this.ie5up = (this.ie && !this.ie3 && !this.ie4); 

	this.opera = (this.ua.indexOf("opera") != -1);
	this.webtv = (this.ua.indexOf("webtv") != -1); 
}

var is = new ClientSnifferJr();

var casovac;
var prodleva=1000;

function zobrazMenu(e) {
	clearTimeout(casovac);
	x=document.getElementById('mnu');
	if (is.nav4up) {
		x.style.left=e.clientX+5;
		x.style.top=e.clientY+5+window.pageYOffset;
	}
	else {
		x.style.left=window.event.clientX+5;
		x.style.top=window.event.clientY+5+document.body.scrollTop;
	}
	x.style.visibility='visible';
}

function schovejMenu(e) {
	casovac=setTimeout("uplneSchovejMenu()",prodleva);
}

function uplneSchovejMenu() {
	document.getElementById('mnu').style.visibility='hidden';
}

function udrzMenu(e) {
	clearTimeout(casovac);
}

function o_okno(cesta, jmeno, sirka, vyska, misto,scrollbarzoff)
{
	if (!scrollbarzoff) scrollbarzoff="scrollbars=yes"; else scrollbarzoff="scrollbars=no";
	if (misto<0) {poloha=screen.availWidth-(sirka+20)+misto} else {poloha=misto}
	params="toolbar=no, menubar=no, location=no, directories=no, "+scrollbarzoff+", resizable=yes, status=yes, top=10, left="+poloha+", width="+sirka+", height="+vyska
	okn=window.open(cesta, jmeno, params)
}