Event.observe(document,'dom:loaded',function(){
	$$('.case_image').each(function(list){
		var count=6;
		list.select('img').each(function(element){if(element.hasClassName('elBlob'))count--;});
		var extension=count>4?'_thumb_3':count>1?'_thumb_2':'_thumb';
		list.select('img').each(function(element){element.src=element.src.replace(/(^.*)_thumb\.gif$/,'$1'+extension+'.gif');})
	});
});