javascript实现的listview效果

                var _separate = this.getSeparate(true);
                this.textPanel.appendChild(_separate);
                this.headers[this.headers.length] = _separate;                                 
           }
           var _last = document.createElement('SPAN');
           with (_last) {
                 style.width = this.headerPanel.offsetWidth;
                 style.height = this.headerHeight;
                 style.overflow = 'hidden';
                 style.backgroundColor = 'buttonface';
                 style.borderLeft = '1px solid buttonhighlight'; 
                 style.borderTop = '1px solid buttonhighlight'; 
                 style.borderRight = '1px solid buttonshadow'; 
                 style.borderBottom = '1px solid buttonshadow'; 
                 style.textAlign = 'center';
                 style.fontSize = '12px';
                 style.fontFamily = 'Sans-Serif, Tahoma';
                 style.paddingTop = '1px';
                 innerText = new String();
           }