docs: function heightChangeFun() {
      if (this.countContentHeight) {
          var oldH = this.wholeHeight,
              h = $('#' + this.options.id)[0].offsetHeight;
          this.wholeHeight = h;
          if (oldH != h && h > 0) {
              var contentH = h - 1 - this.exceptContentHeight > 0 ? h - 1 - this.exceptContentHeight : 0;
              $('#' + this.options.id + '_content').css('height', contentH + 'px');
              $('#' + this.options.id + '_content_div').css('height', contentH + 'px');
          }
      }
  }