function show_pic(which)
{
	var number = which.getAttribute("rel");
	
	var pic_small = pics_small[number];
	var pic_big = pics_big[number];
	var description = alts[number];
	var credit = photographers[number];
		
	$('pic_on_display').src = pic_small;
	$('pic_description').update(description);
	$('pic_credit').update(credit);
	$('lightbox_link').href = pic_big;
	$('lightbox_link').title = description;

	return false;
}

function prepare_pic_links()
{	
	var thumb_links = $("thumbs").getElementsByTagName("a");	

	for(var i = 0; i < thumb_links.length; i++)
	{
		thumb_links[i].onclick = function()
		{
			return show_pic(this);
		}
	}
}

Event.observe(window, 'load', function(){prepare_pic_links();});