function prepGalleryThumbs () {
	var galDivs = document.getElementsByTagName("div");
	for (m=0; m<galDivs.length; m++) {
		var galDiv = galDivs[m];
		if (galDiv.className == "galleryImage") {
			var aHref = galDiv.getElementsByTagName("a");
			aHref[0].onmouseover = function () {				
				return swapTopImage(this);
			}
		}
	}
}
addLoadEvent(prepGalleryThumbs);

function swapTopImage (caller) {
	var topImage = document.getElementById("topImage");
	topImage.setAttribute("src", caller.getAttribute("href"));
	var topImageCaption = document.getElementById("topImageCaption");
	if (caller.getAttribute("title") != "") {
		topImageCaption.firstChild.nodeValue = caller.getAttribute("title");
	}
	return false;
}
function addLoadEvent (func) {
	var oldonload = window.onload;
	if (typeof window.onload != "function") {
		window.onload = func();
	} else {
		window.onload = function() {
			oldonload();
			func();
		}
	}
}