pt> 
$(".showmore").readmore({
moreLink: '<div class="more">展开阅读全文 ∨</div>',
lessLink: '<div class="more">点击收起 ∧</div>',
collapsedHeight: 200,
afterToggle: function(trigger, element, expanded) {
        if(! expanded) { // The "Close" link was clicked
          $('html, body').animate({scrollTop: element.offset().top}, {duration: 100});
        }
      },
beforeToggle: function(trigger, element, expanded) {
        if(! expanded) { // The "Close" link was clicked
          $('html, body').animate({scrollTop: element.offset().top}, {duration: 100});
        }
      }
});
</script>
</body>
</html>