diff --git a/includes/PHPExcel/Classes/PHPExcel/Writer/OpenDocument/Content.php b/includes/PHPExcel/Classes/PHPExcel/Writer/OpenDocument/Content.php
new file mode 100644
index 0000000..625b354
--- /dev/null
+++ b/includes/PHPExcel/Classes/PHPExcel/Writer/OpenDocument/Content.php
@@ -0,0 +1,272 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Writer_OpenDocument
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_Writer_OpenDocument_Content
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Writer_OpenDocument
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @author     Alexander Pervakov <frost-nzcr4@jagmort.com>
+ */
+class PHPExcel_Writer_OpenDocument_Content extends PHPExcel_Writer_OpenDocument_WriterPart
+{
+    const NUMBER_COLS_REPEATED_MAX = 1024;
+    const NUMBER_ROWS_REPEATED_MAX = 1048576;
+
+    /**
+     * Write content.xml to XML format
+     *
+     * @param   PHPExcel                   $pPHPExcel
+     * @return  string                     XML Output
+     * @throws  PHPExcel_Writer_Exception
+     */
+    public function write(PHPExcel $pPHPExcel = null)
+    {
+        if (!$pPHPExcel) {
+            $pPHPExcel = $this->getParentWriter()->getPHPExcel(); /* @var $pPHPExcel PHPExcel */
+        }
+
+        $objWriter = null;
+        if ($this->getParentWriter()->getUseDiskCaching()) {
+            $objWriter = new PHPExcel_Shared_XMLWriter(PHPExcel_Shared_XMLWriter::STORAGE_DISK, $this->getParentWriter()->getDiskCachingDirectory());
+        } else {
+            $objWriter = new PHPExcel_Shared_XMLWriter(PHPExcel_Shared_XMLWriter::STORAGE_MEMORY);
+        }
+
+        // XML header
+        $objWriter->startDocument('1.0', 'UTF-8');
+
+        // Content
+        $objWriter->startElement('office:document-content');
+            $objWriter->writeAttribute('xmlns:office', 'urn:oasis:names:tc:opendocument:xmlns:office:1.0');
+            $objWriter->writeAttribute('xmlns:style', 'urn:oasis:names:tc:opendocument:xmlns:style:1.0');
+            $objWriter->writeAttribute('xmlns:text', 'urn:oasis:names:tc:opendocument:xmlns:text:1.0');
+            $objWriter->writeAttribute('xmlns:table', 'urn:oasis:names:tc:opendocument:xmlns:table:1.0');
+            $objWriter->writeAttribute('xmlns:draw', 'urn:oasis:names:tc:opendocument:xmlns:drawing:1.0');
+            $objWriter->writeAttribute('xmlns:fo', 'urn:oasis:names:tc:opendocument:xmlns:xsl-fo-compatible:1.0');
+            $objWriter->writeAttribute('xmlns:xlink', 'http://www.w3.org/1999/xlink');
+            $objWriter->writeAttribute('xmlns:dc', 'http://purl.org/dc/elements/1.1/');
+            $objWriter->writeAttribute('xmlns:meta', 'urn:oasis:names:tc:opendocument:xmlns:meta:1.0');
+            $objWriter->writeAttribute('xmlns:number', 'urn:oasis:names:tc:opendocument:xmlns:datastyle:1.0');
+            $objWriter->writeAttribute('xmlns:presentation', 'urn:oasis:names:tc:opendocument:xmlns:presentation:1.0');
+            $objWriter->writeAttribute('xmlns:svg', 'urn:oasis:names:tc:opendocument:xmlns:svg-compatible:1.0');
+            $objWriter->writeAttribute('xmlns:chart', 'urn:oasis:names:tc:opendocument:xmlns:chart:1.0');
+            $objWriter->writeAttribute('xmlns:dr3d', 'urn:oasis:names:tc:opendocument:xmlns:dr3d:1.0');
+            $objWriter->writeAttribute('xmlns:math', 'http://www.w3.org/1998/Math/MathML');
+            $objWriter->writeAttribute('xmlns:form', 'urn:oasis:names:tc:opendocument:xmlns:form:1.0');
+            $objWriter->writeAttribute('xmlns:script', 'urn:oasis:names:tc:opendocument:xmlns:script:1.0');
+            $objWriter->writeAttribute('xmlns:ooo', 'http://openoffice.org/2004/office');
+            $objWriter->writeAttribute('xmlns:ooow', 'http://openoffice.org/2004/writer');
+            $objWriter->writeAttribute('xmlns:oooc', 'http://openoffice.org/2004/calc');
+            $objWriter->writeAttribute('xmlns:dom', 'http://www.w3.org/2001/xml-events');
+            $objWriter->writeAttribute('xmlns:xforms', 'http://www.w3.org/2002/xforms');
+            $objWriter->writeAttribute('xmlns:xsd', 'http://www.w3.org/2001/XMLSchema');
+            $objWriter->writeAttribute('xmlns:xsi', 'http://www.w3.org/2001/XMLSchema-instance');
+            $objWriter->writeAttribute('xmlns:rpt', 'http://openoffice.org/2005/report');
+            $objWriter->writeAttribute('xmlns:of', 'urn:oasis:names:tc:opendocument:xmlns:of:1.2');
+            $objWriter->writeAttribute('xmlns:xhtml', 'http://www.w3.org/1999/xhtml');
+            $objWriter->writeAttribute('xmlns:grddl', 'http://www.w3.org/2003/g/data-view#');
+            $objWriter->writeAttribute('xmlns:tableooo', 'http://openoffice.org/2009/table');
+            $objWriter->writeAttribute('xmlns:field', 'urn:openoffice:names:experimental:ooo-ms-interop:xmlns:field:1.0');
+            $objWriter->writeAttribute('xmlns:formx', 'urn:openoffice:names:experimental:ooxml-odf-interop:xmlns:form:1.0');
+            $objWriter->writeAttribute('xmlns:css3t', 'http://www.w3.org/TR/css3-text/');
+            $objWriter->writeAttribute('office:version', '1.2');
+
+            $objWriter->writeElement('office:scripts');
+            $objWriter->writeElement('office:font-face-decls');
+            $objWriter->writeElement('office:automatic-styles');
+
+            $objWriter->startElement('office:body');
+                $objWriter->startElement('office:spreadsheet');
+                    $objWriter->writeElement('table:calculation-settings');
+                    $this->_writeSheets($objWriter);
+                    $objWriter->writeElement('table:named-expressions');
+                $objWriter->endElement();
+            $objWriter->endElement();
+        $objWriter->endElement();
+
+        return $objWriter->getData();
+    }
+
+    /**
+     * Write sheets
+     *
+     * @param PHPExcel_Shared_XMLWriter $objWriter
+     */
+    private function _writeSheets(PHPExcel_Shared_XMLWriter $objWriter)
+    {
+        $pPHPExcel = $this->getParentWriter()->getPHPExcel(); /* @var $pPHPExcel PHPExcel */
+
+        $sheet_count = $pPHPExcel->getSheetCount();
+        for ($i = 0; $i < $sheet_count; $i++) {
+            //$this->getWriterPart('Worksheet')->writeWorksheet());
+            $objWriter->startElement('table:table');
+                $objWriter->writeAttribute('table:name', $pPHPExcel->getSheet($i)->getTitle());
+                $objWriter->writeElement('office:forms');
+                $objWriter->startElement('table:table-column');
+                    $objWriter->writeAttribute('table:number-columns-repeated', self::NUMBER_COLS_REPEATED_MAX);
+                $objWriter->endElement();
+                $this->_writeRows($objWriter, $pPHPExcel->getSheet($i));
+            $objWriter->endElement();
+        }
+    }
+
+    /**
+     * Write rows of the specified sheet
+     *
+     * @param PHPExcel_Shared_XMLWriter $objWriter
+     * @param PHPExcel_Worksheet $sheet
+     */
+    private function _writeRows(PHPExcel_Shared_XMLWriter $objWriter, PHPExcel_Worksheet $sheet)
+    {
+        $number_rows_repeated = self::NUMBER_ROWS_REPEATED_MAX;
+        $span_row = 0;
+        $rows = $sheet->getRowIterator();
+        while ($rows->valid()) {
+            $number_rows_repeated--;
+            $row = $rows->current();
+            if ($row->getCellIterator()->valid()) {
+                if ($span_row) {
+                    $objWriter->startElement('table:table-row');
+                    if ($span_row > 1) {
+                        $objWriter->writeAttribute('table:number-rows-repeated', $span_row);
+                    }
+                    $objWriter->startElement('table:table-cell');
+                        $objWriter->writeAttribute('table:number-columns-repeated', self::NUMBER_COLS_REPEATED_MAX);
+                    $objWriter->endElement();
+                    $objWriter->endElement();
+                    $span_row = 0;
+                }
+                $objWriter->startElement('table:table-row');
+                $this->_writeCells($objWriter, $row);
+                $objWriter->endElement();
+            } else {
+                $span_row++;
+            }
+            $rows->next();
+        }
+    }
+
+    /**
+     * Write cells of the specified row
+     *
+     * @param PHPExcel_Shared_XMLWriter $objWriter
+     * @param PHPExcel_Worksheet_Row $row
+     * @throws PHPExcel_Writer_Exception
+     */
+    private function _writeCells(PHPExcel_Shared_XMLWriter $objWriter, PHPExcel_Worksheet_Row $row)
+    {
+        $number_cols_repeated = self::NUMBER_COLS_REPEATED_MAX;
+        $prev_column = -1;
+        $cells = $row->getCellIterator();
+        while ($cells->valid()) {
+            $cell = $cells->current();
+            $column = PHPExcel_Cell::columnIndexFromString($cell->getColumn()) - 1;
+
+            $this->_writeCellSpan($objWriter, $column, $prev_column);
+            $objWriter->startElement('table:table-cell');
+
+            switch ($cell->getDataType()) {
+                case PHPExcel_Cell_DataType::TYPE_BOOL:
+                    $objWriter->writeAttribute('office:value-type', 'boolean');
+                    $objWriter->writeAttribute('office:value', $cell->getValue());
+                    $objWriter->writeElement('text:p', $cell->getValue());
+                    break;
+
+                case PHPExcel_Cell_DataType::TYPE_ERROR:
+                    throw new PHPExcel_Writer_Exception('Writing of error not implemented yet.');
+                    break;
+
+                case PHPExcel_Cell_DataType::TYPE_FORMULA:
+                    try {
+                        $formula_value = $cell->getCalculatedValue();
+                    } catch (Exception $e) {
+                        $formula_value = $cell->getValue();
+                    }
+                    $objWriter->writeAttribute('table:formula', 'of:' . $cell->getValue());
+                    if (is_numeric($formula_value)) {
+                        $objWriter->writeAttribute('office:value-type', 'float');
+                    } else {
+                        $objWriter->writeAttribute('office:value-type', 'string');
+                    }
+                    $objWriter->writeAttribute('office:value', $formula_value);
+                    $objWriter->writeElement('text:p', $formula_value);
+                    break;
+
+                case PHPExcel_Cell_DataType::TYPE_INLINE:
+                    throw new PHPExcel_Writer_Exception('Writing of inline not implemented yet.');
+                    break;
+
+                case PHPExcel_Cell_DataType::TYPE_NUMERIC:
+                    $objWriter->writeAttribute('office:value-type', 'float');
+                    $objWriter->writeAttribute('office:value', $cell->getValue());
+                    $objWriter->writeElement('text:p', $cell->getValue());
+                    break;
+
+                case PHPExcel_Cell_DataType::TYPE_STRING:
+                    $objWriter->writeAttribute('office:value-type', 'string');
+                    $objWriter->writeElement('text:p', $cell->getValue());
+                    break;
+            }
+            PHPExcel_Writer_OpenDocument_Cell_Comment::write($objWriter, $cell);
+            $objWriter->endElement();
+            $prev_column = $column;
+            $cells->next();
+        }
+        $number_cols_repeated = $number_cols_repeated - $prev_column - 1;
+        if ($number_cols_repeated > 0) {
+            if ($number_cols_repeated > 1) {
+                $objWriter->startElement('table:table-cell');
+                $objWriter->writeAttribute('table:number-columns-repeated', $number_cols_repeated);
+                $objWriter->endElement();
+            } else {
+                $objWriter->writeElement('table:table-cell');
+            }
+        }
+    }
+
+    /**
+     * Write span
+     *
+     * @param PHPExcel_Shared_XMLWriter $objWriter
+     * @param integer $curColumn
+     * @param integer $prevColumn
+     */
+    private function _writeCellSpan(PHPExcel_Shared_XMLWriter $objWriter, $curColumn, $prevColumn)
+    {
+        $diff = $curColumn - $prevColumn - 1;
+        if (1 === $diff) {
+            $objWriter->writeElement('table:table-cell');
+        } elseif ($diff > 1) {
+            $objWriter->startElement('table:table-cell');
+                $objWriter->writeAttribute('table:number-columns-repeated', $diff);
+            $objWriter->endElement();
+        }
+    }
+}
diff --git a/includes/PHPExcel/Classes/PHPExcel/Writer/OpenDocument/Meta.php b/includes/PHPExcel/Classes/PHPExcel/Writer/OpenDocument/Meta.php
new file mode 100644
index 0000000..7f39e55
--- /dev/null
+++ b/includes/PHPExcel/Classes/PHPExcel/Writer/OpenDocument/Meta.php
@@ -0,0 +1,98 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Writer_OpenDocument
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_Writer_OpenDocument_Meta
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Writer_OpenDocument
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @author     Alexander Pervakov <frost-nzcr4@jagmort.com>
+ */
+class PHPExcel_Writer_OpenDocument_Meta extends PHPExcel_Writer_OpenDocument_WriterPart
+{
+    /**
+     * Write meta.xml to XML format
+     *
+     * @param   PHPExcel                   $pPHPExcel
+     * @return  string                     XML Output
+     * @throws  PHPExcel_Writer_Exception
+     */
+    public function write(PHPExcel $pPHPExcel = null)
+    {
+        if (!$pPHPExcel) {
+            $pPHPExcel = $this->getParentWriter()->getPHPExcel();
+        }
+
+        $objWriter = null;
+        if ($this->getParentWriter()->getUseDiskCaching()) {
+            $objWriter = new PHPExcel_Shared_XMLWriter(PHPExcel_Shared_XMLWriter::STORAGE_DISK, $this->getParentWriter()->getDiskCachingDirectory());
+        } else {
+            $objWriter = new PHPExcel_Shared_XMLWriter(PHPExcel_Shared_XMLWriter::STORAGE_MEMORY);
+        }
+
+        // XML header
+        $objWriter->startDocument('1.0', 'UTF-8');
+
+        // Meta
+        $objWriter->startElement('office:document-meta');
+            $objWriter->writeAttribute('xmlns:office', 'urn:oasis:names:tc:opendocument:xmlns:office:1.0');
+            $objWriter->writeAttribute('xmlns:xlink', 'http://www.w3.org/1999/xlink');
+            $objWriter->writeAttribute('xmlns:dc', 'http://purl.org/dc/elements/1.1/');
+            $objWriter->writeAttribute('xmlns:meta', 'urn:oasis:names:tc:opendocument:xmlns:meta:1.0');
+            $objWriter->writeAttribute('xmlns:ooo', 'http://openoffice.org/2004/office');
+            $objWriter->writeAttribute('xmlns:grddl', 'http://www.w3.org/2003/g/data-view#');
+            $objWriter->writeAttribute('office:version', '1.2');
+
+            $objWriter->startElement('office:meta');
+                $objWriter->writeElement('meta:initial-creator', $pPHPExcel->getProperties()->getCreator());
+                $objWriter->writeElement('dc:creator', $pPHPExcel->getProperties()->getCreator());
+                $objWriter->writeElement('meta:creation-date', date(DATE_W3C, $pPHPExcel->getProperties()->getCreated()));
+                $objWriter->writeElement('dc:date', date(DATE_W3C, $pPHPExcel->getProperties()->getCreated()));
+                $objWriter->writeElement('dc:title', $pPHPExcel->getProperties()->getTitle());
+                $objWriter->writeElement('dc:description', $pPHPExcel->getProperties()->getDescription());
+                $objWriter->writeElement('dc:subject', $pPHPExcel->getProperties()->getSubject());
+                $keywords = explode(' ', $pPHPExcel->getProperties()->getKeywords());
+                foreach ($keywords as $keyword) {
+                    $objWriter->writeElement('meta:keyword', $keyword);
+                }
+                //<meta:document-statistic meta:table-count="XXX" meta:cell-count="XXX" meta:object-count="XXX"/>
+                $objWriter->startElement('meta:user-defined');
+                    $objWriter->writeAttribute('meta:name', 'Company');
+                    $objWriter->writeRaw($pPHPExcel->getProperties()->getCompany());
+                $objWriter->endElement();
+                $objWriter->startElement('meta:user-defined');
+                    $objWriter->writeAttribute('meta:name', 'category');
+                    $objWriter->writeRaw($pPHPExcel->getProperties()->getCategory());
+                $objWriter->endElement();
+            $objWriter->endElement();
+        $objWriter->endElement();
+
+        return $objWriter->getData();
+    }
+}
diff --git a/includes/PHPExcel/Classes/PHPExcel/Writer/OpenDocument/MetaInf.php b/includes/PHPExcel/Classes/PHPExcel/Writer/OpenDocument/MetaInf.php
new file mode 100644
index 0000000..301d39d
--- /dev/null
+++ b/includes/PHPExcel/Classes/PHPExcel/Writer/OpenDocument/MetaInf.php
@@ -0,0 +1,96 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Writer_OpenDocument
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_Writer_OpenDocument_MetaInf
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Writer_OpenDocument
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @author     Alexander Pervakov <frost-nzcr4@jagmort.com>
+ */
+class PHPExcel_Writer_OpenDocument_MetaInf extends PHPExcel_Writer_OpenDocument_WriterPart
+{
+    /**
+     * Write META-INF/manifest.xml to XML format
+     *
+     * @param     PHPExcel    $pPHPExcel
+     * @return     string         XML Output
+     * @throws     PHPExcel_Writer_Exception
+     */
+    public function writeManifest(PHPExcel $pPHPExcel = null)
+    {
+        if (!$pPHPExcel) {
+            $pPHPExcel = $this->getParentWriter()->getPHPExcel();
+        }
+
+        $objWriter = null;
+        if ($this->getParentWriter()->getUseDiskCaching()) {
+            $objWriter = new PHPExcel_Shared_XMLWriter(PHPExcel_Shared_XMLWriter::STORAGE_DISK, $this->getParentWriter()->getDiskCachingDirectory());
+        } else {
+            $objWriter = new PHPExcel_Shared_XMLWriter(PHPExcel_Shared_XMLWriter::STORAGE_MEMORY);
+        }
+
+        // XML header
+        $objWriter->startDocument('1.0', 'UTF-8');
+
+        // Manifest
+        $objWriter->startElement('manifest:manifest');
+            $objWriter->writeAttribute('xmlns:manifest', 'urn:oasis:names:tc:opendocument:xmlns:manifest:1.0');
+            $objWriter->writeAttribute('manifest:version', '1.2');
+
+            $objWriter->startElement('manifest:file-entry');
+                $objWriter->writeAttribute('manifest:full-path', '/');
+                $objWriter->writeAttribute('manifest:version', '1.2');
+                $objWriter->writeAttribute('manifest:media-type', 'application/vnd.oasis.opendocument.spreadsheet');
+            $objWriter->endElement();
+            $objWriter->startElement('manifest:file-entry');
+                $objWriter->writeAttribute('manifest:full-path', 'meta.xml');
+                $objWriter->writeAttribute('manifest:media-type', 'text/xml');
+            $objWriter->endElement();
+            $objWriter->startElement('manifest:file-entry');
+                $objWriter->writeAttribute('manifest:full-path', 'settings.xml');
+                $objWriter->writeAttribute('manifest:media-type', 'text/xml');
+            $objWriter->endElement();
+            $objWriter->startElement('manifest:file-entry');
+                $objWriter->writeAttribute('manifest:full-path', 'content.xml');
+                $objWriter->writeAttribute('manifest:media-type', 'text/xml');
+            $objWriter->endElement();
+            $objWriter->startElement('manifest:file-entry');
+                $objWriter->writeAttribute('manifest:full-path', 'Thumbnails/thumbnail.png');
+                $objWriter->writeAttribute('manifest:media-type', 'image/png');
+            $objWriter->endElement();
+            $objWriter->startElement('manifest:file-entry');
+                $objWriter->writeAttribute('manifest:full-path', 'styles.xml');
+                $objWriter->writeAttribute('manifest:media-type', 'text/xml');
+            $objWriter->endElement();
+        $objWriter->endElement();
+
+        return $objWriter->getData();
+    }
+}
diff --git a/includes/PHPExcel/Classes/PHPExcel/Writer/OpenDocument/Mimetype.php b/includes/PHPExcel/Classes/PHPExcel/Writer/OpenDocument/Mimetype.php
new file mode 100644
index 0000000..99ff638
--- /dev/null
+++ b/includes/PHPExcel/Classes/PHPExcel/Writer/OpenDocument/Mimetype.php
@@ -0,0 +1,50 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Writer_OpenDocument
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_Writer_OpenDocument_Mimetype
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Writer_OpenDocument
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @author     Alexander Pervakov <frost-nzcr4@jagmort.com>
+ */
+class PHPExcel_Writer_OpenDocument_Mimetype extends PHPExcel_Writer_OpenDocument_WriterPart
+{
+    /**
+     * Write mimetype to plain text format
+     *
+     * @param     PHPExcel    $pPHPExcel
+     * @return     string         XML Output
+     * @throws     PHPExcel_Writer_Exception
+     */
+    public function write(PHPExcel $pPHPExcel = null)
+    {
+        return 'application/vnd.oasis.opendocument.spreadsheet';
+    }
+}
diff --git a/includes/PHPExcel/Classes/PHPExcel/Writer/OpenDocument/Settings.php b/includes/PHPExcel/Classes/PHPExcel/Writer/OpenDocument/Settings.php
new file mode 100644
index 0000000..557e748
--- /dev/null
+++ b/includes/PHPExcel/Classes/PHPExcel/Writer/OpenDocument/Settings.php
@@ -0,0 +1,85 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Writer_OpenDocument
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_Writer_OpenDocument_Settings
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Writer_OpenDocument
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @author     Alexander Pervakov <frost-nzcr4@jagmort.com>
+ */
+class PHPExcel_Writer_OpenDocument_Settings extends PHPExcel_Writer_OpenDocument_WriterPart
+{
+    /**
+     * Write settings.xml to XML format
+     *
+     * @param   PHPExcel                   $pPHPExcel
+     * @return  string                     XML Output
+     * @throws  PHPExcel_Writer_Exception
+     */
+    public function write(PHPExcel $pPHPExcel = null)
+    {
+        if (!$pPHPExcel) {
+            $pPHPExcel = $this->getParentWriter()->getPHPExcel();
+        }
+
+        $objWriter = null;
+        if ($this->getParentWriter()->getUseDiskCaching()) {
+            $objWriter = new PHPExcel_Shared_XMLWriter(PHPExcel_Shared_XMLWriter::STORAGE_DISK, $this->getParentWriter()->getDiskCachingDirectory());
+        } else {
+            $objWriter = new PHPExcel_Shared_XMLWriter(PHPExcel_Shared_XMLWriter::STORAGE_MEMORY);
+        }
+
+        // XML header
+        $objWriter->startDocument('1.0', 'UTF-8');
+
+        // Settings
+        $objWriter->startElement('office:document-settings');
+            $objWriter->writeAttribute('xmlns:office', 'urn:oasis:names:tc:opendocument:xmlns:office:1.0');
+            $objWriter->writeAttribute('xmlns:xlink', 'http://www.w3.org/1999/xlink');
+            $objWriter->writeAttribute('xmlns:config', 'urn:oasis:names:tc:opendocument:xmlns:config:1.0');
+            $objWriter->writeAttribute('xmlns:ooo', 'http://openoffice.org/2004/office');
+            $objWriter->writeAttribute('office:version', '1.2');
+
+            $objWriter->startElement('office:settings');
+                $objWriter->startElement('config:config-item-set');
+                    $objWriter->writeAttribute('config:name', 'ooo:view-settings');
+                    $objWriter->startElement('config:config-item-map-indexed');
+                        $objWriter->writeAttribute('config:name', 'Views');
+                    $objWriter->endElement();
+                $objWriter->endElement();
+                $objWriter->startElement('config:config-item-set');
+                    $objWriter->writeAttribute('config:name', 'ooo:configuration-settings');
+                $objWriter->endElement();
+            $objWriter->endElement();
+        $objWriter->endElement();
+
+        return $objWriter->getData();
+    }
+}
diff --git a/includes/PHPExcel/Classes/PHPExcel/Writer/OpenDocument/Styles.php b/includes/PHPExcel/Classes/PHPExcel/Writer/OpenDocument/Styles.php
new file mode 100644
index 0000000..d886736
--- /dev/null
+++ b/includes/PHPExcel/Classes/PHPExcel/Writer/OpenDocument/Styles.php
@@ -0,0 +1,101 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Writer_OpenDocument
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_Writer_OpenDocument_Styles
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Writer_OpenDocument
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @author     Alexander Pervakov <frost-nzcr4@jagmort.com>
+ */
+class PHPExcel_Writer_OpenDocument_Styles extends PHPExcel_Writer_OpenDocument_WriterPart
+{
+    /**
+     * Write styles.xml to XML format
+     *
+     * @param   PHPExcel                   $pPHPExcel
+     * @return  string                     XML Output
+     * @throws  PHPExcel_Writer_Exception
+     */
+    public function write(PHPExcel $pPHPExcel = null)
+    {
+        if (!$pPHPExcel) {
+            $pPHPExcel = $this->getParentWriter()->getPHPExcel();
+        }
+
+        $objWriter = null;
+        if ($this->getParentWriter()->getUseDiskCaching()) {
+            $objWriter = new PHPExcel_Shared_XMLWriter(PHPExcel_Shared_XMLWriter::STORAGE_DISK, $this->getParentWriter()->getDiskCachingDirectory());
+        } else {
+            $objWriter = new PHPExcel_Shared_XMLWriter(PHPExcel_Shared_XMLWriter::STORAGE_MEMORY);
+        }
+
+        // XML header
+        $objWriter->startDocument('1.0', 'UTF-8');
+
+        // Content
+        $objWriter->startElement('office:document-styles');
+            $objWriter->writeAttribute('xmlns:office', 'urn:oasis:names:tc:opendocument:xmlns:office:1.0');
+            $objWriter->writeAttribute('xmlns:style', 'urn:oasis:names:tc:opendocument:xmlns:style:1.0');
+            $objWriter->writeAttribute('xmlns:text', 'urn:oasis:names:tc:opendocument:xmlns:text:1.0');
+            $objWriter->writeAttribute('xmlns:table', 'urn:oasis:names:tc:opendocument:xmlns:table:1.0');
+            $objWriter->writeAttribute('xmlns:draw', 'urn:oasis:names:tc:opendocument:xmlns:drawing:1.0');
+            $objWriter->writeAttribute('xmlns:fo', 'urn:oasis:names:tc:opendocument:xmlns:xsl-fo-compatible:1.0');
+            $objWriter->writeAttribute('xmlns:xlink', 'http://www.w3.org/1999/xlink');
+            $objWriter->writeAttribute('xmlns:dc', 'http://purl.org/dc/elements/1.1/');
+            $objWriter->writeAttribute('xmlns:meta', 'urn:oasis:names:tc:opendocument:xmlns:meta:1.0');
+            $objWriter->writeAttribute('xmlns:number', 'urn:oasis:names:tc:opendocument:xmlns:datastyle:1.0');
+            $objWriter->writeAttribute('xmlns:presentation', 'urn:oasis:names:tc:opendocument:xmlns:presentation:1.0');
+            $objWriter->writeAttribute('xmlns:svg', 'urn:oasis:names:tc:opendocument:xmlns:svg-compatible:1.0');
+            $objWriter->writeAttribute('xmlns:chart', 'urn:oasis:names:tc:opendocument:xmlns:chart:1.0');
+            $objWriter->writeAttribute('xmlns:dr3d', 'urn:oasis:names:tc:opendocument:xmlns:dr3d:1.0');
+            $objWriter->writeAttribute('xmlns:math', 'http://www.w3.org/1998/Math/MathML');
+            $objWriter->writeAttribute('xmlns:form', 'urn:oasis:names:tc:opendocument:xmlns:form:1.0');
+            $objWriter->writeAttribute('xmlns:script', 'urn:oasis:names:tc:opendocument:xmlns:script:1.0');
+            $objWriter->writeAttribute('xmlns:ooo', 'http://openoffice.org/2004/office');
+            $objWriter->writeAttribute('xmlns:ooow', 'http://openoffice.org/2004/writer');
+            $objWriter->writeAttribute('xmlns:oooc', 'http://openoffice.org/2004/calc');
+            $objWriter->writeAttribute('xmlns:dom', 'http://www.w3.org/2001/xml-events');
+            $objWriter->writeAttribute('xmlns:rpt', 'http://openoffice.org/2005/report');
+            $objWriter->writeAttribute('xmlns:of', 'urn:oasis:names:tc:opendocument:xmlns:of:1.2');
+            $objWriter->writeAttribute('xmlns:xhtml', 'http://www.w3.org/1999/xhtml');
+            $objWriter->writeAttribute('xmlns:grddl', 'http://www.w3.org/2003/g/data-view#');
+            $objWriter->writeAttribute('xmlns:tableooo', 'http://openoffice.org/2009/table');
+            $objWriter->writeAttribute('xmlns:css3t', 'http://www.w3.org/TR/css3-text/');
+            $objWriter->writeAttribute('office:version', '1.2');
+
+            $objWriter->writeElement('office:font-face-decls');
+            $objWriter->writeElement('office:styles');
+            $objWriter->writeElement('office:automatic-styles');
+            $objWriter->writeElement('office:master-styles');
+        $objWriter->endElement();
+
+        return $objWriter->getData();
+    }
+}
diff --git a/includes/PHPExcel/Classes/PHPExcel/Writer/OpenDocument/Thumbnails.php b/includes/PHPExcel/Classes/PHPExcel/Writer/OpenDocument/Thumbnails.php
new file mode 100644
index 0000000..a7e85c4
--- /dev/null
+++ b/includes/PHPExcel/Classes/PHPExcel/Writer/OpenDocument/Thumbnails.php
@@ -0,0 +1,50 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Writer_OpenDocument
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_Writer_OpenDocument_Thumbnails
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Writer_OpenDocument
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @author     Alexander Pervakov <frost-nzcr4@jagmort.com>
+ */
+class PHPExcel_Writer_OpenDocument_Thumbnails extends PHPExcel_Writer_OpenDocument_WriterPart
+{
+    /**
+     * Write Thumbnails/thumbnail.png to PNG format
+     *
+     * @param   PHPExcel                   $pPHPExcel
+     * @return  string                     XML Output
+     * @throws  PHPExcel_Writer_Exception
+     */
+    public function writeThumbnail(PHPExcel $pPHPExcel = null)
+    {
+        return '';
+    }
+}
diff --git a/includes/PHPExcel/Classes/PHPExcel/Writer/OpenDocument/WriterPart.php b/includes/PHPExcel/Classes/PHPExcel/Writer/OpenDocument/WriterPart.php
new file mode 100644
index 0000000..e6e713a
--- /dev/null
+++ b/includes/PHPExcel/Classes/PHPExcel/Writer/OpenDocument/WriterPart.php
@@ -0,0 +1,38 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Writer_OpenDocument
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_Writer_OpenDocument_WriterPart
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Writer_OpenDocument
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+abstract class PHPExcel_Writer_OpenDocument_WriterPart extends PHPExcel_Writer_Excel2007_WriterPart
+{
+}