$(document).ready( function(){
   $(".thumbnail a.thumb_img").hover(
	  function(){
		  var detail = $(this).find('.details');
		  detail.stop(true, true).animate({'bottom': '-3px'}, 100,'linear');
	  },
	  function(){
		  var detail = $(this).find('.details');
		  detail.stop(true, true).animate({'bottom': '-33px'}, 100,'linear');  
	  }
  );
});