var picIdTmp = '';

function changeElCSS(ids,property,propValue) {
	document.getElementById(ids).style[property] = propValue;
}

function changePic(uzel,picId) {
	var imgHeight = arguments[3] ? arguments[3]:'def';
	picIdTmp = picId;
	var thPic = uzel.getElementsByTagName('img')[0];
	var txt = thPic.alt;
	var trgPic = document.getElementById(picId); 
	trgPic.style.visibility = 'hidden';
	if (imgHeight != 'def') {
		trgPic.src = uzel.href;
		trgPic.height = imgHeight;
	} else {
		trgPic.src = uzel.href;
	}
	trgPic.onload = showIt;
	if (document.getElementById('photo-desc')) {
		var desc = document.getElementById('photo-desc');
		desc.firstChild.nodeValue = txt;
	}
	return false;
}

function showIt() {
	var trg = document.getElementById(picIdTmp); 
	trg.style.visibility = 'visible';
}

function OpenPictureWindow(theURL,winName,x,y) 
	{
		vyska = screen.height;
		sirka = screen.width;
		var levy = (sirka - x)/2;
		var horni = (vyska - y)/2;
		window.open(theURL,winName,"width="+x+",height="+y+",left="+levy+",top="+horni);
	}