function changetotable(printdatagrid) {
    var tablestring = '<table cellspacing="0" class="pb">';
    var frozencolumns = printdatagrid.datagrid("options").frozencolumns;
    // �õ�frozencolumns����
    var columns = printdatagrid.datagrid("options").columns;
    // �õ�columns����
    var namelist = new array();
    // ����title 
    if (typeof columns != 'undefined' && columns != '') {
        $(columns).each(function (index) {
            tablestring += '\n<tr>';
            if (typeof frozencolumns != 'undefined' && typeof frozencolumns[index] != 'undefined') {
                for (var i = 0; i < frozencolumns[index].length; ++i) {
                    if (!frozencolumns[index][i].hidden) {
                        tablestring += '\n<th width="' + frozencolumns[index][i].width + '"';
                        if (typeof frozencolumns[index][i].rowspan != 'undefined' && frozencolumns[index][i].rowspan > 1)
                        { tablestring += ' rowspan="' + frozencolumns[index][i].rowspan + '"'; }
                        if (typeof frozencolumns[index][i].colspan != 'undefined' && frozencolumns[index][i].colspan > 1)
                        { tablestring += ' colspan="' + frozencolumns[index][i].colspan + '"'; }
                        if (typeof frozencolumns[index][i].field != 'undefined' && frozencolumns[index][i].field != '')
                        { namelist.push(frozencolumns[index][i]); } tablestring += '>' + frozencolumns[0][i].title + '</th>';
                    }
                }
            }
            for (var i = 0; i < columns[index].length; ++i) {
                if (!columns[index][i].hidden) {
                    tablestring += '\n<th width="' + columns[index][i].width + '"';
                    if (typeof columns[index][i].rowspan != 'undefined' && columns[index][i].rowspan > 1)
                    { tablestring += ' rowspan="' + columns[index][i].rowspan + '"'; }
                    if (typeof columns[index][i].colspan != 'undefined' && columns[index][i].colspan > 1)
                    { tablestring += ' colspan="' + columns[index][i].colspan + '"'; }
                    if (typeof columns[index][i].field != 'undefined' && columns[index][i].field != '')
                    { namelist.push(columns[index][i]); } tablestring += '>' + columns[index][i].title + '</th>';
                }
            }
            tablestring += '\n</tr>';
        });
    }
    // ��������
    var rows = printdatagrid.datagrid("getrows");
    // ��δ����ǻ�ȡ��ǰҳ�������� 
    for (var i = 0; i < rows.length; ++i) {
        tablestring += '\n<tr>'; for (var j = 0; j < namelist.length; ++j) {
            var e = namelist[j].field.lastindexof('_0');
            tablestring += '\n<td';
            if (namelist[j].align != 'undefined' && namelist[j].align != '')
            { tablestring += ' style="text-align:' + namelist[j].align + ';"'; } tablestring += '>';
            if (e + 2 == namelist[j].field.length) { tablestring += rows[i][namelist[j].field.substring(0, e)]; }
            else tablestring += rows[i][namelist[j].field]; tablestring += '</td>';
        }
        tablestring += '\n</tr>';
    } tablestring += '\n</table>';
    return tablestring;
}
function export(strxlsname, exportgrid) {
    var f = $('<form action="export.aspx" method="post" id="fm1"></form>');
    var i = $('<input type="hidden" id="txtcontent" name="txtcontent" />');
    var l = $('<input type="hidden" id="txtname" name="txtname" />');
    i.val(changetotable(exportgrid)); i.appendto(f);
    l.val(strxlsname); l.appendto(f); f.appendto(document.body).submit();
    document.body.removechild(f);
}