// *** CROSS-BROWSER COMPATIBILITY ***

var isDOM = (document.getElementById ? true : false); 
var isIE = (document.all ? true : false);
var isIE4 = ((isIE && !isDOM) ? true : false);
var isNS4 = (document.layers ? true : false);
var isNS6 = (isDOM && !isIE);
var isDyn = (isDOM || isIE4 || isNS4);


// ********************* Menu *******************

var tableLoaded = false;

var	lastMenu = null;
var	lastMenuHeader = null;

function showMenu(menuName, imgHeader)
{
	if (!tableLoaded) return;
	if (lastMenu != null)
	{
		lastMenu.style.visibility="hidden";
		lastMenu = null;
	}
	if (lastMenuHeader != null)
	{
		document.images[lastMenuHeader].src = eval(lastMenuHeader + ".src")
		lastMenuHeader=null;
	}

	if (browserVer == 1) 
	{
		document.images[imgHeader].src = eval("s"+imgHeader + ".src")
		lastMenuHeader=imgHeader;
	}

	var	menuElement;
	if (document.getElementById)
	{
		menuElement = document.getElementById(menuName);
	}
	else if (document.layers)
	{
		menuElement = document.layers[menuName];
	}
	else
	{
		menuElement = document.all[menuName];
	}
	menuElement.style.visibility="visible";
	lastMenu = menuElement;
}


function hideMenu()
{
	if (!tableLoaded) return;
	if (lastMenu != null)
	{
		lastMenu.style.visibility="hidden";
		lastMenu = null;
	}
	if (lastMenuHeader != null)
	{
		document.images[lastMenuHeader].src = eval(lastMenuHeader + ".src")
		lastMenuHeader=null;
	}
}



// ********************* Rollovers *******************

// check if the browser is Navigator 3 or higher:
agent = navigator.userAgent;
browserVer = 2;
if (agent.substring(0,7) == "Mozilla")
{
    if (parseInt(agent.substring(8,9)) >= 3) {browserVer = 1;}
}

// preload universal images:
if (browserVer == 1) {

uvod= new Image(30,12);
uvod.src = "/img/titles/m-uvod.gif";
suvod = new Image(30,12);
suvod.src = "/img/titles/z-uvod.gif";

aktuality= new Image(52,12);
aktuality.src = "/img/titles/m-aktuality.gif";
saktuality = new Image(52,12);
saktuality.src = "/img/titles/z-aktuality.gif";

ospolecnosti= new Image(76,12);
ospolecnosti.src = "/img/titles/m-o-spolecnosti.gif";
sospolecnosti = new Image(76,12);
sospolecnosti.src = "/img/titles/z-o-spolecnosti.gif";

doprava= new Image(47,12);
doprava.src = "/img/titles/m-doprava.gif";
sdoprava = new Image(47,12);
sdoprava.src = "/img/titles/z-doprava.gif";

preprava= new Image(81,12);
preprava.src = "/img/titles/m-expresni-preprava.gif";
spreprava = new Image(81,12);
spreprava.src = "/img/titles/z-expresni-preprava.gif";

logistika= new Image(50,12);
logistika.src = "/img/titles/m-logistika.gif";
slogistika = new Image(50,12);
slogistika.src = "/img/titles/z-logistika.gif";

clo= new Image(68,12);
clo.src = "/img/titles/m-celni-sluzby.gif";
sclo = new Image(68,12);
sclo.src = "/img/titles/z-celni-sluzby.gif";

xpoptavka= new Image(50,12);
xpoptavka.src = "/img/titles/m-poptavka.gif";
spoptavka = new Image(50,12);
spoptavka.src = "/img/titles/z-poptavka.gif";

kontakty= new Image(50,12);
kontakty.src = "/img/titles/m-kontakty.gif";
skontakty = new Image(50,12);
skontakty.src = "/img/titles/z-kontakty.gif";

vnitrostatni= new Image(72,12);
vnitrostatni.src = "/img/titles/vnitrostatni.gif";
svnitrostatni = new Image(72,12);
svnitrostatni.src = "/img/titles/z-vnitrostatni.gif";

mezinarodni= new Image(73,12);
mezinarodni.src = "/img/titles/mezinarodni.gif";
smezinarodni = new Image(73,12);
smezinarodni.src = "/img/titles/z-mezinarodni.gif";

nabidka= new Image(103,12);
nabidka.src = "/img/titles/nabidka.gif";
snabidka = new Image(103,12);
snabidka.src = "/img/titles/z-nabidka.gif";

pronajem= new Image(161,12);
pronajem.src = "/img/titles/pronajem.gif";
spronajem = new Image(161,12);
spronajem.src = "/img/titles/z-pronajem.gif";

co= new Image(65,12);
co.src = "/img/titles/co.gif";
sco = new Image(65,12);
sco.src = "/img/titles/z-co.gif";

operace= new Image(48,12);
operace.src = "/img/titles/operace.gif";
soperace = new Image(48,12);
soperace.src = "/img/titles/z-operace.gif";

skladovani= new Image(63,12);
skladovani.src = "/img/titles/skladovani.gif";
sskladovani = new Image(63,12);
sskladovani.src = "/img/titles/z-skladovani.gif";

dne= new Image(67,12);
dne.src = "/img/titles/24.gif";
sdne = new Image(67,12);
sdne.src = "/img/titles/z-24.gif";

dnu= new Image(49,12);
dnu.src = "/img/titles/5.gif";
sdnu = new Image(49,12);
sdnu.src = "/img/titles/z-5.gif";

slovensko= new Image(76,12);
slovensko.src = "/img/titles/sk.gif";
sslovensko = new Image(76,12);
sslovensko.src = "/img/titles/z-sk.gif";

hodin= new Image(131,12);
hodin.src = "/img/titles/hodin-sl.gif";
shodin = new Image(131,12);
shodin.src = "/img/titles/z-hodin-sl.gif";

depa= new Image(46,12);
depa.src = "/img/titles/depa.gif";
sdepa = new Image(46,12);
sdepa.src = "/img/titles/z-depa.gif";

vop= new Image(173,12);
vop.src = "/img/titles/vop.gif";
svop = new Image(173,12);
svop.src = "/img/titles/z-vop.gif";

tracking= new Image(107,12);
tracking.src = "/img/titles/tracking.gif";
stracking = new Image(107,12);
stracking.src = "/img/titles/z-tracking.gif";

objprepravy= new Image(108,12);
objprepravy.src = "/img/titles/objprepravy.gif";
sobjprepravy = new Image(108,12);
sobjprepravy.src = "/img/titles/z-objprepravy.gif";

sazebnik= new Image(91,12);
sazebnik.src = "/img/titles/sazebnik.gif";
ssazebnik = new Image(91,12);
ssazebnik.src = "/img/titles/z-sazebnik.gif";

doklady= new Image(136,21);
doklady.src = "/img/titles/doklady.gif";
sdoklady = new Image(136,21);
sdoklady.src = "/img/titles/z-doklady.gif";

}
function hiLite(imgDocID,imgObjName) 
{
// manages mouseOver animations
//   imgDocID - the name or number of the document image to be replaced
//   imgObjName - the name of the image object to be swapped in

	if (browserVer == 1) 
	{
		document.images[imgDocID].src = eval(imgObjName + ".src")
	}
}