function loadImage(nr, desc, old) {
	$('jump_back').href = 'images.php?id='+calculatePrevious(nr);
	$('jump_forward').href = 'images.php?id='+calculateNext(nr);
	$('image_in_focus').src = '../Images/Stoneheaps/'+nr+'.jpg';
	$('image_in_focus').parentNode.href = 'map.php?id=' + nr;
	$('focussed_image_info').innerHTML = desc;

	var thumbs = document.getElementsByClassName('thumbnail', 'body');
	
	thumbs.each(function(thumb) {
		thumb.removeClassName('currentImage');
	});
	$('thumb_'+nr).addClassName('currentImage');
	
}

function calculatePrevious(nr) {
	for (var lfd = 0; lfd < dotList.length; lfd++) {
		if (dotList[lfd+1] == nr) {
			return dotList[lfd];
		}
	}
	
}

function calculateNext(nr) {
	for (var lfd = 0; lfd < dotList.length; lfd++) {
		if (dotList[lfd+1] == nr) {
			return dotList[lfd+1];
		}
	}
}