function clicked(photo) {
	var imgsrc = photo.src;
	var newsrc = imgsrc.replace("/thumbnails", "");
	var images = document.getElementById("enlarge").getElementsByTagName("IMG");
	var enlarge = images[0];
	enlarge.src = newsrc;
}


function another(prevornext) {
	var picfile = document.getElementById("bigpic");
	var filestring = picfile.src;
	var splitstring = filestring.split("/");
	var filename = splitstring[splitstring.length-1];
	var nextindex;
	var piclist = document.getElementById("thumbs").getElementsByTagName("IMG");
	for (i = 0; i < piclist.length; i++) {
		filestring = piclist[i].src;
		splitstring = filestring.split("/");
		if (filename == splitstring[splitstring.length-1]) {
			if (prevornext == 'prev' & i > 0) {
				nextindex = i-1;
				break;
			}
			if (prevornext == 'next' & i+1 < piclist.length) {
				nextindex = i+1;
			} else {
				nextindex = i;
			}
			break;
		}
	}
	var imgsrc = piclist[nextindex].src;
	var newsrc = imgsrc.replace("/thumbnails", "");
	picfile.src = newsrc;
}

function prev() {
	another('prev');
}
function next() {
	another('next');
}