function openMenu(cat) {
var cat = document.getElementById('cat'+ cat);
var setting = cat.style.display;

// change display
if(setting=="none") { cat.style.display = 'block'; }
else { cat.style.display = 'none'; }
}

function openPhoto(photo) {
window.open("photo.php?photo=" + photo, "photogallery", "toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=no,width=800,height=600");
}

function archive(ln) {
window.open("news.php?ln=" + ln, "news", "toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=no,width=250,height=500");
}

function openForm(fid) {
window.open("form.php?fid=" + fid, "formular", "toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=no,width=500,height=650");
}

function bignews(id) {
window.open("bignews.php?id=" + id, "bnews", "toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=no,width=500,height=650");
}

function changeLN(ln) {
window.location='index.php?ln=' + ln;
}

function confirm(ask)
{
var agree=confirm(ask);
if (agree)
	return true;
else
	return false;
}