$html .= "    <td>" . $history['in'] . "</td>";
$html .= "  </tr>";
$html .= "  <tr>";
$html .= "    <th>Outbound</th>";
$html .= "    <td>:</td>";
$html .= "    <td>" . $history['out'] . "</td>";
$html .= "  </tr>";
$html .= "  <tr>";
$html .= "    <th>Allowed</th>";
$html .= "    <td>:</td>";
$html .= "    <td>" . $history['allowed'] . "</td>";
$html .= "  </tr>";
$html .= "  <tr>";
$html .= "    <th>Overusage</th>";
$html .= "    <td>:</td>";
$html .= "    <td>" . $history['overusage'] . "</td>";
$html .= "  </tr>";
$html .= "</table>";
$html .= "<tcpdf method=\"AddPage\" params=\"" . $landscape . "\" />";
$html .= "<h2>Bitrate Graph overview</h2>";
$html .= "<p></p>";
$html .= graphOverviewBitrate($bill_id, $history);
$html .= "<tcpdf method=\"AddPage\" params=\"" . $landscape . "\" />";
$html .= "<h2>Transfer Graph overview</h2>";
$html .= "<p></p>";
$html .= graphOverviewTransfer($bill_id, $history);
$html .= "<tcpdf method=\"AddPage\" params=\"" . $portret . "\" />";
$html .= "<h2>Detailed transfer overview</h2>";
$html .= "<p></p>";
$html .= transferOverview($bill_id, $history);
    $res .= "          <td style=\"text-align: center;\"><span class=\"badge badge-info\"><strong>" . $tot['out'] . "</strong></span></td>";
    $res .= "          <td style=\"text-align: center;\"><span class=\"badge badge-inverse\"><strong>" . $tot['tot'] . "</strong></span></td>";
    $res .= "          <td></td>";
    $res .= "        </tr>";
    $res .= "      </tbody>";
    $res .= "    </table>";
    return $res;
}
if ($active['billing'] == "active") {
    $graph = $bi;
} elseif ($active['24hour'] == "active") {
    $graph = $di;
} elseif ($active['monthly'] == "active") {
    $graph = $mi;
} elseif ($active['detail'] == "active") {
    $graph = transferOverview($bill_id, $unixfrom, $unixto);
} elseif ($active['previous'] == "active") {
    $graph = $li;
}
/**
?>
<div class="row" style="margin-bottom: 15px;">
  <div class="col-md-6 well info_box">
    <div id="title"><i class="oicon-information"></i> 账单概述</div>
    <table class="table table-striped table-bordered table-condensed table-rounded">
      <tr>
        <th style="width: 125px;">账单周期</th>
        <td style="width: 5px;">:</td>
        <td><?php echo($fromtext." to ".$totext); ?></td>
      </tr>
      <tr>