set_image = function(e)
{
	mi = $('main_image');
	element = e.element();
	regex = /\.\d+\.\d+\./;
//	mi.src = element.src.replace(regex,'.534.360.');
	mi.src = element.getAttribute("rel");
}

load_observers = function(e)
{
	$$('.thumbnail').each(function(img) {
		img.observe('click',set_image);
	});
}

Event.observe(window,'load', load_observers);