// Image gallery
window.onload = prepareGallery;
function prepareGallery(){
	if(!document.getElementsByTagName) return false;	
	if(!document.getElementById) return false;
	if(!document.getElementById("photogallery")) return false;
	var gallery = document.getElementById("photogallery");
	var links = gallery.getElementsByTagName("a");
	for (var i = 0; i < links.length; i++){
		links[i].onclick = function(){
			return showPic(this);
		}
	}
}

function showPic(whichpic) {
	if(!document.getElementById("placeholder")) return true;
	var source = whichpic.getAttribute("href");
	var placeholder = document.getElementById("placeholder");
	if (placeholder.nodeName != "IMG") return true;
	placeholder.setAttribute("src",source);
	return false;
}