function hover(hNode) {
	if (hNode.parentNode.className.indexOf(" off") != -1)
		hNode.parentNode.className = hNode.parentNode.className.replace(" off", " on");
}

function unhover(hNode) {
	if (hNode.parentNode.className.indexOf(" on") != -1)
		hNode.parentNode.className = hNode.parentNode.className.replace(" on", " off");
}

function showPic (whichpic) {
	if (document.getElementById) {
		document.getElementById('imageoverlay').className = "visible";
		document.getElementById('placeholder').src = whichpic.href;
		if (whichpic.title) {
			document.getElementById('desc').innerHTML = whichpic.title;
		} else {
			document.getElementById('desc').innerHTML = whichpic.childNodes[0].nodeValue;
		}
		document.getElementById('flashmovie').className = "hidden";
		return false;
	} else {
		return true;
	}
}

function hideOverlay() {
	if(document.getElementById) {
		document.getElementById('imageoverlay').className = "hidden";
		document.getElementById('flashmovie').className = "visible";
		return false;
	}
	return true;
}