将页面上数据保存到excel中

function saveCode(obj) {
 var year = "<%=year%>";
 var month = "<%=month%>";
 var name = year + "年" + month + "月度绩效考核成绩汇总.xls";
    var winname = window.open('', '_self', 'top=10000');
    var strHTML = document.getElementById(obj).innerHTML;
    winname.document.open('textml', 'replace');
    winname.document.writeln(strHTML);
    winname.document.execCommand('saveas','','' + name + '');
    winname.close();
    window.close();
}