function print_table_from_json_def_file($data, $json_filename, $table_array) {

    //make sure we have everything we need
    if (!$data || !$json_filename || !isset($table_array['id'])) {
        return false;
    }

    $table_def_json    = get_table_def_file($json_filename);
    $table_def         = get_table_def($table_def_json);

    $columns            = array();

    foreach ($table_def['columns'] as $col):

        $col    = (object) $col;

        $column = new ceta_default_column();

        $column->set_fieldname($col->fieldname);
        $column->set_caption($col->caption);
        $column->set_width($col->width);
        $column->set_datatype($col->datatype);
        $column->set_display_total($col->displaytotal);

        //add the column to our columns array
        $columns[] = $column;

    endforeach;

    #build the actual table ($data and $table_array['table_id'] MUST be supplied)
    //$table_array['id']          = $table_id;
    $table_array['data']        = $data;
    $table_array['columns']     = $columns;
    $table_array['classes']     = $table_def['classes'];
    $table_array['rownumbers']  = $table_def['rownumbers'];

    return print_table_from_object($table_array);
}

//------------------------------------------------------------------------------

function print_table_from_object($table_data) {

    $table_id       = $table_data['id'];

    $row_numbers    = $table_data['rownumbers'];

    $column_totals  = array();

    $str            = "";

    $i              = 0;

    #open the table
    //--------------------------------------------------------------------------
    $str .= print_table_open($table_id, $table_data['width'], $table_data['classes'], $table_data['styles']);
    //--------------------------------------------------------------------------






    #open the header
    //--------------------------------------------------------------------------
    $str .= print_table_head_open();
    //--------------------------------------------------------------------------

    $str .= print_table_row_open();

    if ($row_numbers == true) {
        $str .= print_table_header("");
    }

    foreach ($table_data['columns'] as $column) {

        $column->set_value($column->get_caption());

        $str .= print_table_cell_from_object($column, TRUE);
    }

    $str .= print_table_row_close();

    #close the header
    //--------------------------------------------------------------------------
    $str .= print_table_head_close();
    //--------------------------------------------------------------------------






    #open the body
    //--------------------------------------------------------------------------
    $str .= print_table_body_open();
    //--------------------------------------------------------------------------

    //loop through each row
    foreach ($table_data['data'] as $row) {

        $i ++;

        $str .= print_table_row_open();

        if ($row_numbers == TRUE) {
            $str .= print_table_header("$i");
        }

        //loop through each column for this row
        foreach ($table_data['columns'] as $column) {

            //get the field name - use it below
            $field_name = $column->get_fieldname();

            $cell_data_object           = $column;
            $cell_data_object->set_value($row[$field_name]);

            $display_total              = $column->get_display_total();

            //keep track of total if we need to show a column sum total
            if (count($display_total) && $display_total[0]['type'] == 'columnsum') {
                $column_totals[$field_name] =  $column_totals[$field_name] + $row[$field_name];
            }

            $str .= print_table_cell_from_object($cell_data_object, FALSE);

        }

        $str .= print_table_row_close();
    }


    #close the body
    //--------------------------------------------------------------------------
    $str .= print_table_body_close();
    //--------------------------------------------------------------------------






    #open the footer
    //--------------------------------------------------------------------------
    $str .= print_table_foot_open();
    //--------------------------------------------------------------------------

    $str .= print_table_row_open();

    if ($row_numbers == true) {
        $str .= print_table_header("");
    }

    foreach ($table_data['columns'] as $column) {

        $field_name         = $column->get_fieldname();
        $display_total      = $column->get_display_total();

        //some kind of total needs to be displayed
        if (count($display_total)) {

            //normal column sum
            if ($display_total[0]['type'] == 'columnsum') {
                $column->set_value($column_totals[$column->get_fieldname()]);

                $str .= print_table_cell_from_object($column, TRUE, TRUE);
            }

            //percentage calculated from two field totals
            if ($display_total[0]['type'] == 'percent') {
                $field_value1   = $column_totals[$display_total[0]['field1']];
                $field_value2   = $column_totals[$display_total[0]['field2']];

                //put this in the column total var (so it can be used for further calculations)
                $column_totals[$field_name] = ($field_value1 / $field_value2) * 100;

                $column->set_value($column_totals[$field_name]);


                $str .= print_table_cell_from_object($column, TRUE, TRUE);
            }

            //difference (one field total minus the other)
            if ($display_total[0]['type'] == 'difference') {

                //check for decimal value (ie not a field)
                if (substr($display_total[0]['field1'], 0, 2) == '%d') {
                    $field_value1   = substr($display_total[0]['field1'], 2);
                } else {
                    $field_value1   = $column_totals[$display_total[0]['field1']];
                }
                //check for decimal value (ie not a field)
                if (substr($display_total[0]['field2'], 0, 2) == '%d') {
                    $field_value2   = substr($display_total[0]['field2'], 2);
                } else {
                    $field_value2   = $column_totals[$display_total[0]['field2']];
                }

                //put this in the column total (so it can be used for further calculations)
                $column_totals[$field_name] = $field_value1 - $field_value2;

                $column->set_value($column_totals[$field_name]);

                $str .= print_table_cell_from_object($column, TRUE, TRUE);

            }

        }

        if (!$column->get_display_total()) {
            $str .= print_table_header("");
        }
    }

    $str .= print_table_row_close();

    #close the footer
    //--------------------------------------------------------------------------
    $str .= print_table_foot_close();
    //--------------------------------------------------------------------------







    #close the table
    //--------------------------------------------------------------------------
    $str .= print_table_close();
    //--------------------------------------------------------------------------







    #add jquery to format table
    //--------------------------------------------------------------------------


    $str .= "<script>";
    $str .= "$(function(){ ";


    $str .= <<<JS

    var table_id = "#!!table_id!!#";

    var current = $('#' + table_id).position();

    var table   = $('#' + table_id).dataTable({
        "scrollY":           get_window_height() - current.top - 5,
        "paging":            false
    });

    var export_defaults = [
        {
            "sExtends":"copy",
            "fnClick":function(nButton, oConfig, flash) {

                var table_data      = this.fnGetTableData(oConfig);
                var new_table_data  = table_data.replace(/#!!.+?!!#/g, "");

                this.fnSetText(flash, new_table_data);

            }

        },
        {
            "sExtends":"xls",
            "fnClick":function(nButton, oConfig, flash) {

                var table_data      = this.fnGetTableData(oConfig);
                var new_table_data  = table_data.replace(/#!!.+?!!#/g, "");

                this.fnSetText(flash, new_table_data);

            }

        }

    ];

    // we only want the copy and export xls button
    $.fn.dataTable.TableTools.defaults.sSwfPath = "/swf/copy_csv_xls_pdf.swf";
    $.fn.dataTable.TableTools.defaults.aButtons = export_defaults;
    var tt = new $.fn.dataTable.TableTools( table );
    $( tt.fnContainer() ).insertAfter('div.dataTables_filter');

JS;

    $str .= "});";
    $str .= "</script>";

    $str = str_replace("#!!table_id!!#", $table_id, $str);


    //--------------------------------------------------------------------------


    return $str;
}