javascript实现的listview效果

               for (var i = 0; i < _children.length; i ++) {
                    if (_isSelected) {
                        _children[i].style.color = 'highlighttext';
                        _children[i].style.backgroundColor = 'highlight';
                    } else {
                        _children[i].style.color = '';
                        _children[i].style.backgroundColor = '';                         
                    }
               }                
           } else {
               return false;
           }
       },

       showSelected : function(n) {
           var _text = new String();
           for (var i = 0; i < this.items.length - 2; i++) {
                if (i % 2 == 0) {
                    var _table = this.items[i].firstChild;
                    _text += this.headers[i].innerText + ':n';
                    _text += _table.rows[n].cells[0].firstChild.innerHTML + 'nn';