打印兼容火狐的问题

Question

    function printing(tb){
    var nw = window.open('','','width=800,height=600');
        nw.document.open("text/html","gb2312");
        <!--nw.document.write('<link rel="stylesheet" type="text/css" href="../css/mycss.css">');-->
        nw.document.write("<object classid='CLSID:8856F961-340A-11D0-A96B-00C04FD705A2' id='wb' height='0' width='0'></object>");
        nw.document.write(document.getElementById(tb).outerHTML);
        nw.document.write("<script>document.all.wb.ExecWB(7,1)</sc"+"ript>");
        }tb为打印TABLE的ID
在IE里面可以，在火狐就出现undefined的错误

Answer 1

有大虾知道的吗 给个方法 THX