src/lay/modules/flow.js
function(html, over){ 
      html = $(html);
      more.before(html);
      over = over == 0 ? true : null;
      over ? more.html(end) : more.find('a').html(ELEM_TEXT);
      isOver = over;
      lock = null;
      lazyimg && lazyimg();
    }
function(html, over){ 
      html = $(html);
      more.before(html);
      over = over == 0 ? true : null;
      over ? more.html(end) : more.find('a').html(ELEM_TEXT);
      isOver = over;
      lock = null;
      lazyimg && lazyimg();
    }
加载下一个元素