javascript实现的listview效果

           this.textPanel.appendChild(_last); 
           this.headers[this.headers.length] = _last;       
       }, 

       drawRowItem : function(_headers, _aligns) {
           this.items = [];
           this.itemWidth = Math.round((parseInt(this.rowItemPanel.style.width) - (_headers.length - 1) * 1) / _headers.length) + 1;
           this.itemHeight = parseInt(this.rowItemPanel.style.height) - 2;
           for (var i = 0; i < _headers.length; i ++) {
                var _item = document.createElement('SPAN');
                with (_item) {
                      style.width = this.itemWidth;
                      style.height = this.itemHeight;
                      style.overflow = 'hidden';
                      style.padding = '0px';
                      appendChild((function(_count, _width, _height, _align) {
                            var _table = document.createElement('TABLE');
                            with (_table) {
                                  cellSpacing = 0;
                                  cellPadding = 0;