JS页面传值

function fun2(txt)
    {
        var bm_id=document.getElementById('hide_bmid').value;
        document.getElementById('hideIndex').value=txt.parentNode.parentNode.rowIndex;
        //alert(bm_id);
        window.open ('Listgdzc.aspx?bmid='+bm_id+'', 'newwindow', 'height=500px, width=650px, toolbar= no, menubar=no, scrollbars=no, resizable=no, location=no,status=no,top=200,left=300');
    }