function GetDate(days){
var mydate=new Date();
mydate.setTime(mydate.getTime() + days * 1000 * 60 * 60 * 24);
var year=mydate.getYear();
if (year < 1000)year+=1900;
var day=mydate.getDay();
var month=mydate.getMonth();
var daym=mydate.getDate();
var dayarray=new Array("Neděle","Pondělí","Úterý","Středa","Čtvrtek","Pátek","Sobota");
var montharray=new Array("ledna","února","března","dubna","května","června","července","srpna", "září","října", "listopadu","prosince");
return daym+". "+montharray[month]+" "+year;
}

function GetDateAndTime(){
var mydate=new Date();
var year=mydate.getYear();
if (year < 1000)year+=1900;
var day=mydate.getDay();
var month=mydate.getMonth();
var daym=mydate.getDate();
var dayarray=new Array("Neděle","Pondělí","Úterý","Středa","Čtvrtek","Pátek","Sobota");
var montharray=new Array("ledna","února","března","dubna","května","června","července","srpna","září","října","listopadu","prosince");
return dayarray[day]+", "+daym+". "+montharray[month]+" "+year+"<br>"+ mydate.getHours()+":"+(mydate.getMinutes() > 9 ? mydate.getMinutes() : "0"+mydate.getMinutes());
}


function gethelp(context){
window.open("help.htm#"+context,"helpwin", "toolbar=no,resizable=no,scrollbars=no,width=400,height=100,left=0");
}

function showmenu(name){
	if (navigator.appName=="Microsoft Internet Explorer") {
		document.all[name].style.visibility = "visible";
	} else {
		document.layers[name].visibility = "show";
	}
}

function hidemenu(name){
	if (navigator.appName=="Microsoft Internet Explorer") {
		document.all[name].style.visibility = "hidden";
	} else {
		document.layers[name].visibility = "hidden";
	}
}

function addbookmark(bookmarkURL, bookmarktitle){
  if (document.all)
  window.external.AddFavorite(bookmarkURL, bookmarktitle)
}

var imgnum = 1;
var imgmax = 18;

function imgchange() {
	if(navigator.onLine)
		Layer2.innerHTML =  "<img src='bgimages/" + imgnum + ".jpg' name='img2'>" ;

	imgnum++;
	if (imgnum > imgmax)
  		imgnum = 1;

	if(navigator.onLine)
		Layer1.innerHTML =  "<img src='bgimages/" + imgnum + ".jpg' name='img1'>" ;

setTimeout("imgchange()", 10000);
}

function WindowOpen(src, name){
	var w = window.open(src, name, 'height=100, width=100, status=0, toolbar=0, menubar=0, location=0, scrollbars=1');
	w.moveTo(0,0);
	w.resizeTo(screen.availWidth,screen.availHeight);
	w.focus();
}

function ByeWindow(src, name){
	var w = window.open(src, name, 'height=150, width=400, status=0, toolbar=0, menubar=0, location=0, scrollbars=0');
}

function MaximizeScreen(){
	self.moveTo(0,0);
	self.resizeTo(screen.availWidth,screen.availHeight);
	self.focus();
}