7 files changed, 0 insertions, 2029 deletions
diff --git a/admin/survey/excel/PHPExcel/Cell.php b/admin/survey/excel/PHPExcel/Cell.php
deleted file mode 100644
index d0f5231..0000000
--- a/admin/survey/excel/PHPExcel/Cell.php
+++ /dev/null
@@ -1,972 +0,0 @@
-<?php
-/**
- *	PHPExcel
- *
- *	Copyright (c) 2006 - 2012 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_Cell
- *	@copyright	Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- *	@license	http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- *	@version	1.7.8, 2012-10-12
- */
-
-
-/**
- *	PHPExcel_Cell
- *
- *	@category   PHPExcel
- *	@package	PHPExcel_Cell
- *	@copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_Cell
-{
-
-	/**
-	 *  Default range variable constant
-	 *
-	 *  @var  string
-	 */
-	const DEFAULT_RANGE = 'A1:A1';
-
-	/**
-	 *	Value binder to use
-	 *
-	 *	@var	PHPExcel_Cell_IValueBinder
-	 */
-	private static $_valueBinder = NULL;
-
-	/**
-	 *	Column of the cell
-	 *
-	 *	@var	string
-	 */
-	private $_column;
-
-	/**
-	 *	Row of the cell
-	 *
-	 *	@var	int
-	 */
-	private $_row;
-
-	/**
-	 *	Value of the cell
-	 *
-	 *	@var	mixed
-	 */
-	private $_value;
-
-	/**
-	 *	Calculated value of the cell (used for caching)
-	 *	This returns the value last calculated by MS Excel or whichever spreadsheet program was used to
-	 *		create the original spreadsheet file.
-	 *	Note that this value is not guaranteed to reflect the actual calculated value because it is
-	 *		possible that auto-calculation was disabled in the original spreadsheet, and underlying data
-	 *		values used by the formula have changed since it was last calculated.
-	 *
-	 *	@var mixed
-	 */
-	private $_calculatedValue = NULL;
-
-	/**
-	 *	Type of the cell data
-	 *
-	 *	@var	string
-	 */
-	private $_dataType;
-
-	/**
-	 *	Parent worksheet
-	 *
-	 *	@var	PHPExcel_Worksheet
-	 */
-	private $_parent;
-
-	/**
-	 *	Index to cellXf
-	 *
-	 *	@var	int
-	 */
-	private $_xfIndex;
-
-	/**
-	 *	Attributes of the formula
-	 *
-	 */
-	private $_formulaAttributes;
-
-
-	/**
-	 *	Send notification to the cache controller
-	 *
-	 *	@return void
-	 **/
-	public function notifyCacheController() {
-		$this->_parent->getCellCacheController()->updateCacheData($this);
-		return $this;
-	}
-
-	public function detach() {
-		$this->_parent = NULL;
-	}
-
-	public function attach($parent) {
-		$this->_parent = $parent;
-	}
-
-
-	/**
-	 *	Create a new Cell
-	 *
-	 *	@param	string				$pColumn
-	 *	@param	int					$pRow
-	 *	@param	mixed				$pValue
-	 *	@param	string				$pDataType
-	 *	@param	PHPExcel_Worksheet	$pSheet
-	 *	@throws	PHPExcel_Exception
-	 */
-	public function __construct($pColumn = 'A', $pRow = 1, $pValue = NULL, $pDataType = NULL, PHPExcel_Worksheet $pSheet = NULL)
-	{
-		// Initialise cell coordinate
-		$this->_column = strtoupper($pColumn);
-		$this->_row = $pRow;
-
-		// Initialise cell value
-		$this->_value = $pValue;
-
-		// Set worksheet
-		$this->_parent = $pSheet;
-
-		// Set datatype?
-		if ($pDataType !== NULL) {
-			if ($pDataType == PHPExcel_Cell_DataType::TYPE_STRING2)
-				$pDataType = PHPExcel_Cell_DataType::TYPE_STRING;
-			$this->_dataType = $pDataType;
-		} else {
-			if (!self::getValueBinder()->bindValue($this, $pValue)) {
-				throw new PHPExcel_Exception("Value could not be bound to cell.");
-			}
-		}
-
-		// set default index to cellXf
-		$this->_xfIndex = 0;
-	}
-
-	/**
-	 *	Get cell coordinate column
-	 *
-	 *	@return	string
-	 */
-	public function getColumn()
-	{
-		return $this->_column;
-	}
-
-	/**
-	 *	Get cell coordinate row
-	 *
-	 *	@return	int
-	 */
-	public function getRow()
-	{
-		return $this->_row;
-	}
-
-	/**
-	 *	Get cell coordinate
-	 *
-	 *	@return	string
-	 */
-	public function getCoordinate()
-	{
-		return $this->_column . $this->_row;
-	}
-
-	/**
-	 *	Get cell value
-	 *
-	 *	@return	mixed
-	 */
-	public function getValue()
-	{
-		return $this->_value;
-	}
-
-	/**
-	 *	Get cell value with formatting
-	 *
-	 *	@return	string
-	 */
-	public function getFormattedValue()
-	{
-		return (string) PHPExcel_Style_NumberFormat::toFormattedString(
-				$this->getCalculatedValue(),
-				$this->_parent->getParent()->getCellXfByIndex($this->getXfIndex())
-					->getNumberFormat()->getFormatCode()
-			);
-	}
-
-	/**
-	 *	Set cell value
-	 *
-	 *	Sets the value for a cell, automatically determining the datatype using the value binder
-	 *
-	 *	@param	mixed	$pValue					Value
-	 *	@return	PHPExcel_Cell
-	 *	@throws	PHPExcel_Exception
-	 */
-	public function setValue($pValue = NULL)
-	{
-		if (!self::getValueBinder()->bindValue($this, $pValue)) {
-			throw new PHPExcel_Exception("Value could not be bound to cell.");
-		}
-		return $this;
-	}
-
-	/**
-	 *	Set the value for a cell, with the explicit data type passed to the method (bypassing any use of the value binder)
-	 *
-	 *	@param	mixed	$pValue			Value
-	 *	@param	string	$pDataType		Explicit data type
-	 *	@return	PHPExcel_Cell
-	 *	@throws	PHPExcel_Exception
-	 */
-	public function setValueExplicit($pValue = NULL, $pDataType = PHPExcel_Cell_DataType::TYPE_STRING)
-	{
-		// set the value according to data type
-		switch ($pDataType) {
-			case PHPExcel_Cell_DataType::TYPE_STRING2:
-				$pDataType = PHPExcel_Cell_DataType::TYPE_STRING;
-			case PHPExcel_Cell_DataType::TYPE_STRING:
-			case PHPExcel_Cell_DataType::TYPE_NULL:
-			case PHPExcel_Cell_DataType::TYPE_INLINE:
-				$this->_value = PHPExcel_Cell_DataType::checkString($pValue);
-				break;
-			case PHPExcel_Cell_DataType::TYPE_NUMERIC:
-				$this->_value = (float)$pValue;
-				break;
-			case PHPExcel_Cell_DataType::TYPE_FORMULA:
-				$this->_value = (string)$pValue;
-				break;
-			case PHPExcel_Cell_DataType::TYPE_BOOL:
-				$this->_value = (bool)$pValue;
-				break;
-			case PHPExcel_Cell_DataType::TYPE_ERROR:
-				$this->_value = PHPExcel_Cell_DataType::checkErrorCode($pValue);
-				break;
-			default:
-				throw new PHPExcel_Exception('Invalid datatype: ' . $pDataType);
-				break;
-		}
-
-		// set the datatype
-		$this->_dataType = $pDataType;
-
-		return $this->notifyCacheController();
-	}
-
-	/**
-	 *	Get calculated cell value
-	 *
-	 *	@deprecated		Since version 1.7.8 for planned changes to cell for array formula handling
-	 *
-	 *	@return	mixed
-	 *	@throws	PHPExcel_Exception
-	 */
-	public function getCalculatedValue($resetLog = TRUE)
-	{
-//		echo 'Cell '.$this->getCoordinate().' value is a '.$this->_dataType.' with a value of '.$this->getValue().'<br />';
-		if ($this->_dataType == PHPExcel_Cell_DataType::TYPE_FORMULA) {
-			try {
-//				echo 'Cell value for '.$this->getCoordinate().' is a formula: Calculating value<br />';
-				$result = PHPExcel_Calculation::getInstance()->calculateCellValue($this,$resetLog);
-//				echo $this->getCoordinate().' calculation result is '.$result.'<br />';
-			} catch ( Exception $ex ) {
-				if (($ex->getMessage() === 'Unable to access External Workbook') && ($this->_calculatedValue !== NULL)) {
-//					echo 'Returning fallback value of '.$this->_calculatedValue.' for cell '.$this->getCoordinate().'<br />';
-					return $this->_calculatedValue; // Fallback for calculations referencing external files.
-				}
-//				echo 'Calculation Exception: '.$ex->getMessage().'<br />';
-				$result = '#N/A';
-				throw(
-					new PHPExcel_Exception(
-						$this->getParent()->getTitle().'!'.$this->getCoordinate().' -> '.$ex->getMessage()
-					)
-				);
-			}
-
-			if ($result === '#Not Yet Implemented') {
-//				echo 'Returning fallback value of '.$this->_calculatedValue.' for cell '.$this->getCoordinate().'<br />';
-				return $this->_calculatedValue; // Fallback if calculation engine does not support the formula.
-			}
-//			echo 'Returning calculated value of '.$result.' for cell '.$this->getCoordinate().'<br />';
-			return $result;
-		}
-
-//		if ($this->_value === NULL) {
-//			echo 'Cell '.$this->getCoordinate().' has no value, formula or otherwise<br />';
-//			return NULL;
-//		}
-//		echo 'Cell value for '.$this->getCoordinate().' is not a formula: Returning data value of '.$this->_value.'<br />';
-		return $this->_value;
-	}
-
-	/**
-	 *	Set old calculated value (cached)
-	 *
-	 *	@param	mixed $pValue	Value
-	 *	@return	PHPExcel_Cell
-	 */
-	public function setCalculatedValue($pValue = NULL)
-	{
-		if ($pValue !== NULL) {
-			$this->_calculatedValue = (is_numeric($pValue)) ? (float) $pValue : $pValue;
-		}
-
-		return $this->notifyCacheController();
-	}
-
-	/**
-	 *	Get old calculated value (cached)
-	 *	This returns the value last calculated by MS Excel or whichever spreadsheet program was used to
-	 *		create the original spreadsheet file.
-	 *	Note that this value is not guaranteed to refelect the actual calculated value because it is
-	 *		possible that auto-calculation was disabled in the original spreadsheet, and underlying data
-	 *		values used by the formula have changed since it was last calculated.
-	 *
-	 *	@return	mixed
-	 */
-	public function getOldCalculatedValue()
-	{
-		return $this->_calculatedValue;
-	}
-
-	/**
-	 *	Get cell data type
-	 *
-	 *	@return string
-	 */
-	public function getDataType()
-	{
-		return $this->_dataType;
-	}
-
-	/**
-	 *	Set cell data type
-	 *
-	 *	@param	string $pDataType
-	 *	@return	PHPExcel_Cell
-	 */
-	public function setDataType($pDataType = PHPExcel_Cell_DataType::TYPE_STRING)
-	{
-		if ($pDataType == PHPExcel_Cell_DataType::TYPE_STRING2)
-			$pDataType = PHPExcel_Cell_DataType::TYPE_STRING;
-
-		$this->_dataType = $pDataType;
-
-		return $this->notifyCacheController();
-	}
-
-	/**
-	 *	Does this cell contain Data validation rules?
-	 *
-	 *	@return	boolean
-	 *	@throws	PHPExcel_Exception
-	 */
-	public function hasDataValidation()
-	{
-		if (!isset($this->_parent)) {
-			throw new PHPExcel_Exception('Cannot check for data validation when cell is not bound to a worksheet');
-		}
-
-		return $this->_parent->dataValidationExists($this->getCoordinate());
-	}
-
-	/**
-	 *	Get Data validation rules
-	 *
-	 *	@return	PHPExcel_Cell_DataValidation
-	 *	@throws	PHPExcel_Exception
-	 */
-	public function getDataValidation()
-	{
-		if (!isset($this->_parent)) {
-			throw new PHPExcel_Exception('Cannot get data validation for cell that is not bound to a worksheet');
-		}
-
-		return $this->_parent->getDataValidation($this->getCoordinate());
-	}
-
-	/**
-	 *	Set Data validation rules
-	 *
-	 *	@param	PHPExcel_Cell_DataValidation	$pDataValidation
-	 *	@return	PHPExcel_Cell
-	 *	@throws	PHPExcel_Exception
-	 */
-	public function setDataValidation(PHPExcel_Cell_DataValidation $pDataValidation = NULL)
-	{
-		if (!isset($this->_parent)) {
-			throw new PHPExcel_Exception('Cannot set data validation for cell that is not bound to a worksheet');
-		}
-
-		$this->_parent->setDataValidation($this->getCoordinate(), $pDataValidation);
-
-		return $this->notifyCacheController();
-	}
-
-	/**
-	 *	Does this cell contain a Hyperlink?
-	 *
-	 *	@return boolean
-	 *	@throws	PHPExcel_Exception
-	 */
-	public function hasHyperlink()
-	{
-		if (!isset($this->_parent)) {
-			throw new PHPExcel_Exception('Cannot check for hyperlink when cell is not bound to a worksheet');
-		}
-
-		return $this->_parent->hyperlinkExists($this->getCoordinate());
-	}
-
-	/**
-	 *	Get Hyperlink
-	 *
-	 *	@return	PHPExcel_Cell_Hyperlink
-	 *	@throws	PHPExcel_Exception
-	 */
-	public function getHyperlink()
-	{
-		if (!isset($this->_parent)) {
-			throw new PHPExcel_Exception('Cannot get hyperlink for cell that is not bound to a worksheet');
-		}
-
-		return $this->_parent->getHyperlink($this->getCoordinate());
-	}
-
-	/**
-	 *	Set Hyperlink
-	 *
-	 *	@param	PHPExcel_Cell_Hyperlink	$pHyperlink
-	 *	@return	PHPExcel_Cell
-	 *	@throws	PHPExcel_Exception
-	 */
-	public function setHyperlink(PHPExcel_Cell_Hyperlink $pHyperlink = NULL)
-	{
-		if (!isset($this->_parent)) {
-			throw new PHPExcel_Exception('Cannot set hyperlink for cell that is not bound to a worksheet');
-		}
-
-		$this->_parent->setHyperlink($this->getCoordinate(), $pHyperlink);
-
-		return $this->notifyCacheController();
-	}
-
-	/**
-	 *	Get parent worksheet
-	 *
-	 *	@return PHPExcel_Worksheet
-	 */
-	public function getParent() {
-		return $this->_parent;
-	}
-
-	/**
-	 *	Re-bind parent
-	 *
-	 *	@param	PHPExcel_Worksheet $parent
-	 *	@return	PHPExcel_Cell
-	 */
-	public function rebindParent(PHPExcel_Worksheet $parent) {
-		$this->_parent = $parent;
-
-		return $this->notifyCacheController();
-	}
-
-	/**
-	 *	Is cell in a specific range?
-	 *
-	 *	@param	string	$pRange		Cell range (e.g. A1:A1)
-	 *	@return	boolean
-	 */
-	public function isInRange($pRange = 'A1:A1')
-	{
-		list($rangeStart,$rangeEnd) = self::rangeBoundaries($pRange);
-
-		// Translate properties
-		$myColumn	= self::columnIndexFromString($this->getColumn());
-		$myRow		= $this->getRow();
-
-		// Verify if cell is in range
-		return (($rangeStart[0] <= $myColumn) && ($rangeEnd[0] >= $myColumn) &&
-				($rangeStart[1] <= $myRow) && ($rangeEnd[1] >= $myRow)
-			   );
-	}
-
-	/**
-	 *	Coordinate from string
-	 *
-	 *	@param	string	$pCoordinateString
-	 *	@return	array	Array containing column and row (indexes 0 and 1)
-	 *	@throws	PHPExcel_Exception
-	 */
-	public static function coordinateFromString($pCoordinateString = 'A1')
-	{
-		if (preg_match("/^([$]?[A-Z]{1,3})([$]?\d{1,7})$/", $pCoordinateString, $matches)) {
-			return array($matches[1],$matches[2]);
-		} elseif ((strpos($pCoordinateString,':') !== FALSE) || (strpos($pCoordinateString,',') !== FALSE)) {
-			throw new PHPExcel_Exception('Cell coordinate string can not be a range of cells');
-		} elseif ($pCoordinateString == '') {
-			throw new PHPExcel_Exception('Cell coordinate can not be zero-length string');
-		}
-
-		throw new PHPExcel_Exception('Invalid cell coordinate '.$pCoordinateString);
-	}
-
-	/**
-	 *	Make string row, column or cell coordinate absolute
-	 *
-	 *	@param	string	$pCoordinateString		e.g. 'A' or '1' or 'A1'
-	 *					Note that this value can be a row or column reference as well as a cell reference
-	 *	@return	string	Absolute coordinate		e.g. '$A' or '$1' or '$A$1'
-	 *	@throws	PHPExcel_Exception
-	 */
-	public static function absoluteReference($pCoordinateString = 'A1')
-	{
-		if (strpos($pCoordinateString,':') === FALSE && strpos($pCoordinateString,',') === FALSE) {
-			// Split out any worksheet name from the reference
-			$worksheet = '';
-			$cellAddress = explode('!',$pCoordinateString);
-			if (count($cellAddress) > 1) {
-				list($worksheet,$pCoordinateString) = $cellAddress;
-			}
-			if ($worksheet > '')	$worksheet .= '!';
-
-			// Create absolute coordinate
-			if (ctype_digit($pCoordinateString)) {
-				return $worksheet . '$' . $pCoordinateString;
-			} elseif (ctype_alpha($pCoordinateString)) {
-				return $worksheet . '$' . strtoupper($pCoordinateString);
-			}
-			return $worksheet . self::absoluteCoordinate($pCoordinateString);
-		}
-
-		throw new PHPExcel_Exception('Cell coordinate string can not be a range of cells');
-	}
-
-	/**
-	 *	Make string coordinate absolute
-	 *
-	 *	@param	string	$pCoordinateString		e.g. 'A1'
-	 *	@return	string	Absolute coordinate		e.g. '$A$1'
-	 *	@throws	PHPExcel_Exception
-	 */
-	public static function absoluteCoordinate($pCoordinateString = 'A1')
-	{
-		if (strpos($pCoordinateString,':') === FALSE && strpos($pCoordinateString,',') === FALSE) {
-			// Split out any worksheet name from the coordinate
-			$worksheet = '';
-			$cellAddress = explode('!',$pCoordinateString);
-			if (count($cellAddress) > 1) {
-				list($worksheet,$pCoordinateString) = $cellAddress;
-			}
-			if ($worksheet > '')	$worksheet .= '!';
-
-			// Create absolute coordinate
-			list($column, $row) = self::coordinateFromString($pCoordinateString);
-			$column = ltrim($column,'$');
-			$row = ltrim($row,'$');
-			return $worksheet . '$' . $column . '$' . $row;
-		}
-
-		throw new PHPExcel_Exception('Cell coordinate string can not be a range of cells');
-	}
-
-	/**
-	 *	Split range into coordinate strings
-	 *
-	 *	@param	string	$pRange		e.g. 'B4:D9' or 'B4:D9,H2:O11' or 'B4'
-	 *	@return	array	Array containg one or more arrays containing one or two coordinate strings
-	 *								e.g. array('B4','D9') or array(array('B4','D9'),array('H2','O11'))
-	 *										or array('B4')
-	 */
-	public static function splitRange($pRange = 'A1:A1')
-	{
-		// Ensure $pRange is a valid range
-		if(empty($pRange)) {
-			$pRange = self::DEFAULT_RANGE;
-		}
-
-		$exploded = explode(',', $pRange);
-		$counter = count($exploded);
-		for ($i = 0; $i < $counter; ++$i) {
-			$exploded[$i] = explode(':', $exploded[$i]);
-		}
-		return $exploded;
-	}
-
-	/**
-	 *	Build range from coordinate strings
-	 *
-	 *	@param	array	$pRange	Array containg one or more arrays containing one or two coordinate strings
-	 *	@return	string	String representation of $pRange
-	 *	@throws	PHPExcel_Exception
-	 */
-	public static function buildRange($pRange)
-	{
-		// Verify range
-		if (!is_array($pRange) || empty($pRange) || !is_array($pRange[0])) {
-			throw new PHPExcel_Exception('Range does not contain any information');
-		}
-
-		// Build range
-		$imploded = array();
-		$counter = count($pRange);
-		for ($i = 0; $i < $counter; ++$i) {
-			$pRange[$i] = implode(':', $pRange[$i]);
-		}
-		$imploded = implode(',', $pRange);
-
-		return $imploded;
-	}
-
-	/**
-	 *	Calculate range boundaries
-	 *
-	 *	@param	string	$pRange		Cell range (e.g. A1:A1)
-	 *	@return	array	Range coordinates array(Start Cell, End Cell)
-	 *					where Start Cell and End Cell are arrays (Column Number, Row Number)
-	 */
-	public static function rangeBoundaries($pRange = 'A1:A1')
-	{
-		// Ensure $pRange is a valid range
-		if(empty($pRange)) {
-			$pRange = self::DEFAULT_RANGE;
-		}
-
-		// Uppercase coordinate
-		$pRange = strtoupper($pRange);
-
-		// Extract range
-		if (strpos($pRange, ':') === FALSE) {
-			$rangeA = $rangeB = $pRange;
-		} else {
-			list($rangeA, $rangeB) = explode(':', $pRange);
-		}
-
-		// Calculate range outer borders
-		$rangeStart = self::coordinateFromString($rangeA);
-		$rangeEnd	= self::coordinateFromString($rangeB);
-
-		// Translate column into index
-		$rangeStart[0]	= self::columnIndexFromString($rangeStart[0]);
-		$rangeEnd[0]	= self::columnIndexFromString($rangeEnd[0]);
-
-		return array($rangeStart, $rangeEnd);
-	}
-
-	/**
-	 *	Calculate range dimension
-	 *
-	 *	@param	string	$pRange		Cell range (e.g. A1:A1)
-	 *	@return	array	Range dimension (width, height)
-	 */
-	public static function rangeDimension($pRange = 'A1:A1')
-	{
-		// Calculate range outer borders
-		list($rangeStart,$rangeEnd) = self::rangeBoundaries($pRange);
-
-		return array( ($rangeEnd[0] - $rangeStart[0] + 1), ($rangeEnd[1] - $rangeStart[1] + 1) );
-	}
-
-	/**
-	 *	Calculate range boundaries
-	 *
-	 *	@param	string	$pRange		Cell range (e.g. A1:A1)
-	 *	@return	array	Range coordinates array(Start Cell, End Cell)
-	 *					where Start Cell and End Cell are arrays (Column ID, Row Number)
-	 */
-	public static function getRangeBoundaries($pRange = 'A1:A1')
-	{
-		// Ensure $pRange is a valid range
-		if(empty($pRange)) {
-			$pRange = self::DEFAULT_RANGE;
-		}
-
-		// Uppercase coordinate
-		$pRange = strtoupper($pRange);
-
-		// Extract range
-		if (strpos($pRange, ':') === FALSE) {
-			$rangeA = $rangeB = $pRange;
-		} else {
-			list($rangeA, $rangeB) = explode(':', $pRange);
-		}
-
-		return array( self::coordinateFromString($rangeA), self::coordinateFromString($rangeB));
-	}
-
-	/**
-	 *	Column index from string
-	 *
-	 *	@param	string $pString
-	 *	@return	int Column index (base 1 !!!)
-	 *	@throws	Exception
-	 */
-	public static function columnIndexFromString($pString = 'A')
-	{
-		//	Using a lookup cache adds a slight memory overhead, but boosts speed
-		//	caching using a static within the method is faster than a class static,
-		//		though it's additional memory overhead
-		static $_indexCache = array();
-
-		if (isset($_indexCache[$pString]))
-			return $_indexCache[$pString];
-
-		//	It's surprising how costly the strtoupper() and ord() calls actually are, so we use a lookup array rather than use ord()
-		//		and make it case insensitive to get rid of the strtoupper() as well. Because it's a static, there's no significant
-		//		memory overhead either
-		static $_columnLookup = array(
-			'A' => 1, 'B' => 2, 'C' => 3, 'D' => 4, 'E' => 5, 'F' => 6, 'G' => 7, 'H' => 8, 'I' => 9, 'J' => 10, 'K' => 11, 'L' => 12, 'M' => 13,
-			'N' => 14, 'O' => 15, 'P' => 16, 'Q' => 17, 'R' => 18, 'S' => 19, 'T' => 20, 'U' => 21, 'V' => 22, 'W' => 23, 'X' => 24, 'Y' => 25, 'Z' => 26,
-			'a' => 1, 'b' => 2, 'c' => 3, 'd' => 4, 'e' => 5, 'f' => 6, 'g' => 7, 'h' => 8, 'i' => 9, 'j' => 10, 'k' => 11, 'l' => 12, 'm' => 13,
-			'n' => 14, 'o' => 15, 'p' => 16, 'q' => 17, 'r' => 18, 's' => 19, 't' => 20, 'u' => 21, 'v' => 22, 'w' => 23, 'x' => 24, 'y' => 25, 'z' => 26
-		);
-
-		//	We also use the language construct isset() rather than the more costly strlen() function to match the length of $pString
-		//		for improved performance
-		if (isset($pString{0})) {
-			if (!isset($pString{1})) {
-				$_indexCache[$pString] = $_columnLookup[$pString];
-				return $_indexCache[$pString];
-			} elseif(!isset($pString{2})) {
-				$_indexCache[$pString] = $_columnLookup[$pString{0}] * 26 + $_columnLookup[$pString{1}];
-				return $_indexCache[$pString];
-			} elseif(!isset($pString{3})) {
-				$_indexCache[$pString] = $_columnLookup[$pString{0}] * 676 + $_columnLookup[$pString{1}] * 26 + $_columnLookup[$pString{2}];
-				return $_indexCache[$pString];
-			}
-		}
-		throw new PHPExcel_Exception("Column string index can not be " . ((isset($pString{0})) ? "longer than 3 characters" : "empty"));
-	}
-
-	/**
-	 *	String from columnindex
-	 *
-	 *	@param	int $pColumnIndex Column index (base 0 !!!)
-	 *	@return	string
-	 */
-	public static function stringFromColumnIndex($pColumnIndex = 0)
-	{
-		//	Using a lookup cache adds a slight memory overhead, but boosts speed
-		//	caching using a static within the method is faster than a class static,
-		//		though it's additional memory overhead
-		static $_indexCache = array();
-
-		if (!isset($_indexCache[$pColumnIndex])) {
-			// Determine column string
-			if ($pColumnIndex < 26) {
-				$_indexCache[$pColumnIndex] = chr(65 + $pColumnIndex);
-			} elseif ($pColumnIndex < 702) {
-				$_indexCache[$pColumnIndex] = chr(64 + ($pColumnIndex / 26)) .
-											  chr(65 + $pColumnIndex % 26);
-			} else {
-				$_indexCache[$pColumnIndex] = chr(64 + (($pColumnIndex - 26) / 676)) .
-											  chr(65 + ((($pColumnIndex - 26) % 676) / 26)) .
-											  chr(65 + $pColumnIndex % 26);
-			}
-		}
-		return $_indexCache[$pColumnIndex];
-	}
-
-	/**
-	 *	Extract all cell references in range
-	 *
-	 *	@param	string	$pRange		Range (e.g. A1 or A1:C10 or A1:E10 A20:E25)
-	 *	@return	array	Array containing single cell references
-	 */
-	public static function extractAllCellReferencesInRange($pRange = 'A1') {
-		// Returnvalue
-		$returnValue = array();
-
-		// Explode spaces
-		$cellBlocks = explode(' ', str_replace('$', '', strtoupper($pRange)));
-		foreach ($cellBlocks as $cellBlock) {
-			// Single cell?
-			if (strpos($cellBlock,':') === FALSE && strpos($cellBlock,',') === FALSE) {
-				$returnValue[] = $cellBlock;
-				continue;
-			}
-
-			// Range...
-			$ranges = self::splitRange($cellBlock);
-			foreach($ranges as $range) {
-				// Single cell?
-				if (!isset($range[1])) {
-					$returnValue[] = $range[0];
-					continue;
-				}
-
-				// Range...
-				list($rangeStart, $rangeEnd)	= $range;
-				list($startCol, $startRow)	= sscanf($rangeStart,'%[A-Z]%d');
-				list($endCol, $endRow)		= sscanf($rangeEnd,'%[A-Z]%d');
-				$endCol++;
-
-				// Current data
-				$currentCol	= $startCol;
-				$currentRow	= $startRow;
-
-				// Loop cells
-				while ($currentCol != $endCol) {
-					while ($currentRow <= $endRow) {
-						$returnValue[] = $currentCol.$currentRow;
-						++$currentRow;
-					}
-					++$currentCol;
-					$currentRow = $startRow;
-				}
-			}
-		}
-
-		//	Sort the result by column and row
-		$sortKeys = array();
-		foreach (array_unique($returnValue) as $coord) {
-			list($column,$row) = sscanf($coord,'%[A-Z]%d');
-			$sortKeys[sprintf('%3s%09d',$column,$row)] = $coord;
-		}
-		ksort($sortKeys);
-
-		// Return value
-		return array_values($sortKeys);
-	}
-
-	/**
-	 * Compare 2 cells
-	 *
-	 * @param	PHPExcel_Cell	$a	Cell a
-	 * @param	PHPExcel_Cell	$a	Cell b
-	 * @return	int		Result of comparison (always -1 or 1, never zero!)
-	 */
-	public static function compareCells(PHPExcel_Cell $a, PHPExcel_Cell $b)
-	{
-		if ($a->_row < $b->_row) {
-			return -1;
-		} elseif ($a->_row > $b->_row) {
-			return 1;
-		} elseif (self::columnIndexFromString($a->_column) < self::columnIndexFromString($b->_column)) {
-			return -1;
-		} else {
-			return 1;
-		}
-	}
-
-	/**
-	 * Get value binder to use
-	 *
-	 * @return PHPExcel_Cell_IValueBinder
-	 */
-	public static function getValueBinder() {
-		if (self::$_valueBinder === NULL) {
-			self::$_valueBinder = new PHPExcel_Cell_DefaultValueBinder();
-		}
-
-		return self::$_valueBinder;
-	}
-
-	/**
-	 * Set value binder to use
-	 *
-	 * @param PHPExcel_Cell_IValueBinder $binder
-	 * @throws Exception
-	 */
-	public static function setValueBinder(PHPExcel_Cell_IValueBinder $binder = NULL) {
-		if ($binder === NULL) {
-			throw new Exception("A PHPExcel_Cell_IValueBinder is required for PHPExcel to function correctly.");
-		}
-
-		self::$_valueBinder = $binder;
-	}
-
-	/**
-	 * Implement PHP __clone to create a deep clone, not just a shallow copy.
-	 */
-	public function __clone() {
-		$vars = get_object_vars($this);
-		foreach ($vars as $key => $value) {
-			if ((is_object($value)) && ($key != '_parent')) {
-				$this->$key = clone $value;
-			} else {
-				$this->$key = $value;
-			}
-		}
-	}
-
-	/**
-	 * Get index to cellXf
-	 *
-	 * @return int
-	 */
-	public function getXfIndex()
-	{
-		return $this->_xfIndex;
-	}
-
-	/**
-	 * Set index to cellXf
-	 *
-	 * @param int $pValue
-	 * @return PHPExcel_Cell
-	 */
-	public function setXfIndex($pValue = 0)
-	{
-		$this->_xfIndex = $pValue;
-
-		return $this->notifyCacheController();
-	}
-
-	/**
-	 *	@deprecated		Since version 1.7.8 for planned changes to cell for array formula handling
-	 */
-	public function setFormulaAttributes($pAttributes)
-	{
-		$this->_formulaAttributes = $pAttributes;
-		return $this;
-	}
-
-	/**
-	 *	@deprecated		Since version 1.7.8 for planned changes to cell for array formula handling
-	 */
-	public function getFormulaAttributes()
-	{
-		return $this->_formulaAttributes;
-	}
-
-    /**
-     * Convert to string
-     *
-     * @return string
-     */
-	public function __toString()
-	{
-		return (string) $this->getValue();
-	}
-
-}
-
diff --git a/admin/survey/excel/PHPExcel/Cell/AdvancedValueBinder.php b/admin/survey/excel/PHPExcel/Cell/AdvancedValueBinder.php
deleted file mode 100644
index 021d0a7..0000000
--- a/admin/survey/excel/PHPExcel/Cell/AdvancedValueBinder.php
+++ /dev/null
@@ -1,190 +0,0 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2012 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_Cell
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version    1.7.8, 2012-10-12
- */
-
-
-/** PHPExcel root directory */
-if (!defined('PHPEXCEL_ROOT')) {
-	/**
-	 * @ignore
-	 */
-	define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../');
-	require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');
-}
-
-
-/**
- * PHPExcel_Cell_AdvancedValueBinder
- *
- * @category   PHPExcel
- * @package    PHPExcel_Cell
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_Cell_AdvancedValueBinder extends PHPExcel_Cell_DefaultValueBinder implements PHPExcel_Cell_IValueBinder
-{
-	/**
-	 * Bind value to a cell
-	 *
-	 * @param PHPExcel_Cell $cell	Cell to bind value to
-	 * @param mixed $value			Value to bind in cell
-	 * @return boolean
-	 */
-	public function bindValue(PHPExcel_Cell $cell, $value = null)
-	{
-		// sanitize UTF-8 strings
-		if (is_string($value)) {
-			$value = PHPExcel_Shared_String::SanitizeUTF8($value);
-		}
-
-		// Find out data type
-		$dataType = parent::dataTypeForValue($value);
-
-		// Style logic - strings
-		if ($dataType === PHPExcel_Cell_DataType::TYPE_STRING && !$value instanceof PHPExcel_RichText) {
-			//	Test for booleans using locale-setting
-			if ($value == PHPExcel_Calculation::getTRUE()) {
-				$cell->setValueExplicit( TRUE, PHPExcel_Cell_DataType::TYPE_BOOL);
-				return true;
-			} elseif($value == PHPExcel_Calculation::getFALSE()) {
-				$cell->setValueExplicit( FALSE, PHPExcel_Cell_DataType::TYPE_BOOL);
-				return true;
-			}
-
-			// Check for number in scientific format
-			if (preg_match('/^'.PHPExcel_Calculation::CALCULATION_REGEXP_NUMBER.'$/', $value)) {
-				$cell->setValueExplicit( (float) $value, PHPExcel_Cell_DataType::TYPE_NUMERIC);
-				return true;
-			}
-
-			// Check for fraction
-			if (preg_match('/^([+-]?) *([0-9]*)\s?\/\s*([0-9]*)$/', $value, $matches)) {
-				// Convert value to number
-				$value = $matches[2] / $matches[3];
-				if ($matches[1] == '-') $value = 0 - $value;
-				$cell->setValueExplicit( (float) $value, PHPExcel_Cell_DataType::TYPE_NUMERIC);
-				// Set style
-				$cell->getParent()->getStyle( $cell->getCoordinate() )
-					->getNumberFormat()->setFormatCode( '??/??' );
-				return true;
-			} elseif (preg_match('/^([+-]?)([0-9]*) +([0-9]*)\s?\/\s*([0-9]*)$/', $value, $matches)) {
-				// Convert value to number
-				$value = $matches[2] + ($matches[3] / $matches[4]);
-				if ($matches[1] == '-') $value = 0 - $value;
-				$cell->setValueExplicit( (float) $value, PHPExcel_Cell_DataType::TYPE_NUMERIC);
-				// Set style
-				$cell->getParent()->getStyle( $cell->getCoordinate() )
-					->getNumberFormat()->setFormatCode( '# ??/??' );
-				return true;
-			}
-
-			// Check for percentage
-			if (preg_match('/^\-?[0-9]*\.?[0-9]*\s?\%$/', $value)) {
-				// Convert value to number
-				$value = (float) str_replace('%', '', $value) / 100;
-				$cell->setValueExplicit( $value, PHPExcel_Cell_DataType::TYPE_NUMERIC);
-				// Set style
-				$cell->getParent()->getStyle( $cell->getCoordinate() )
-					->getNumberFormat()->setFormatCode( PHPExcel_Style_NumberFormat::FORMAT_PERCENTAGE_00 );
-				return true;
-			}
-
-			// Check for currency
-			$currencyCode = PHPExcel_Shared_String::getCurrencyCode();
-			if (preg_match('/^'.preg_quote($currencyCode).' *(\d{1,3}(\,\d{3})*|(\d+))(\.\d{2})?$/', $value)) {
-				// Convert value to number
-				$value = (float) trim(str_replace(array($currencyCode,','), '', $value));
-				$cell->setValueExplicit( $value, PHPExcel_Cell_DataType::TYPE_NUMERIC);
-				// Set style
-				$cell->getParent()->getStyle( $cell->getCoordinate() )
-					->getNumberFormat()->setFormatCode(
-						str_replace('$', $currencyCode, PHPExcel_Style_NumberFormat::FORMAT_CURRENCY_USD_SIMPLE )
-					);
-				return true;
-			} elseif (preg_match('/^\$ *(\d{1,3}(\,\d{3})*|(\d+))(\.\d{2})?$/', $value)) {
-				// Convert value to number
-				$value = (float) trim(str_replace(array('$',','), '', $value));
-				$cell->setValueExplicit( $value, PHPExcel_Cell_DataType::TYPE_NUMERIC);
-				// Set style
-				$cell->getParent()->getStyle( $cell->getCoordinate() )
-					->getNumberFormat()->setFormatCode( PHPExcel_Style_NumberFormat::FORMAT_CURRENCY_USD_SIMPLE );
-				return true;
-			}
-
-			// Check for time without seconds e.g. '9:45', '09:45'
-			if (preg_match('/^(\d|[0-1]\d|2[0-3]):[0-5]\d$/', $value)) {
-				// Convert value to number
-				list($h, $m) = explode(':', $value);
-				$days = $h / 24 + $m / 1440;
-				$cell->setValueExplicit($days, PHPExcel_Cell_DataType::TYPE_NUMERIC);
-				// Set style
-				$cell->getParent()->getStyle( $cell->getCoordinate() )
-					->getNumberFormat()->setFormatCode( PHPExcel_Style_NumberFormat::FORMAT_DATE_TIME3 );
-				return true;
-			}
-
-			// Check for time with seconds '9:45:59', '09:45:59'
-			if (preg_match('/^(\d|[0-1]\d|2[0-3]):[0-5]\d:[0-5]\d$/', $value)) {
-				// Convert value to number
-				list($h, $m, $s) = explode(':', $value);
-				$days = $h / 24 + $m / 1440 + $s / 86400;
-				// Convert value to number
-				$cell->setValueExplicit($days, PHPExcel_Cell_DataType::TYPE_NUMERIC);
-				// Set style
-				$cell->getParent()->getStyle( $cell->getCoordinate() )
-					->getNumberFormat()->setFormatCode( PHPExcel_Style_NumberFormat::FORMAT_DATE_TIME4 );
-				return true;
-			}
-
-			// Check for datetime, e.g. '2008-12-31', '2008-12-31 15:59', '2008-12-31 15:59:10'
-			if (($d = PHPExcel_Shared_Date::stringToExcel($value)) !== false) {
-				// Convert value to number
-				$cell->setValueExplicit($d, PHPExcel_Cell_DataType::TYPE_NUMERIC);
-				// Determine style. Either there is a time part or not. Look for ':'
-				if (strpos($value, ':') !== false) {
-					$formatCode = 'yyyy-mm-dd h:mm';
-				} else {
-					$formatCode = 'yyyy-mm-dd';
-				}
-				$cell->getParent()->getStyle( $cell->getCoordinate() )
-					->getNumberFormat()->setFormatCode($formatCode);
-				return true;
-			}
-
-			// Check for newline character "\n"
-			if (strpos($value, "\n") !== FALSE) {
-				$value = PHPExcel_Shared_String::SanitizeUTF8($value);
-				$cell->setValueExplicit($value, PHPExcel_Cell_DataType::TYPE_STRING);
-				// Set style
-				$cell->getParent()->getStyle( $cell->getCoordinate() )
-					->getAlignment()->setWrapText(TRUE);
-				return true;
-			}
-		}
-
-		// Not bound yet? Use parent...
-		return parent::bindValue($cell, $value);
-	}
-}
diff --git a/admin/survey/excel/PHPExcel/Cell/DataType.php b/admin/survey/excel/PHPExcel/Cell/DataType.php
deleted file mode 100644
index 5466851..0000000
--- a/admin/survey/excel/PHPExcel/Cell/DataType.php
+++ /dev/null
@@ -1,114 +0,0 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2012 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_Cell
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version    1.7.8, 2012-10-12
- */
-
-
-/**
- * PHPExcel_Cell_DataType
- *
- * @category   PHPExcel
- * @package    PHPExcel_Cell
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_Cell_DataType
-{
-	/* Data types */
-	const TYPE_STRING2		= 'str';
-	const TYPE_STRING		= 's';
-	const TYPE_FORMULA		= 'f';
-	const TYPE_NUMERIC		= 'n';
-	const TYPE_BOOL			= 'b';
-    const TYPE_NULL			= 'null';
-    const TYPE_INLINE		= 'inlineStr';
-	const TYPE_ERROR		= 'e';
-
-	/**
-	 * List of error codes
-	 *
-	 * @var array
-	 */
-	private static $_errorCodes	= array('#NULL!' => 0, '#DIV/0!' => 1, '#VALUE!' => 2, '#REF!' => 3, '#NAME?' => 4, '#NUM!' => 5, '#N/A' => 6);
-
-	/**
-	 * Get list of error codes
-	 *
-	 * @return array
-	 */
-	public static function getErrorCodes() {
-		return self::$_errorCodes;
-	}
-
-	/**
-	 * DataType for value
-	 *
-	 * @deprecated Replaced by PHPExcel_Cell_IValueBinder infrastructure
-	 * @param	mixed 	$pValue
-	 * @return 	int
-	 */
-	public static function dataTypeForValue($pValue = null) {
-		return PHPExcel_Cell_DefaultValueBinder::dataTypeForValue($pValue);
-	}
-
-	/**
-	 * Check a string that it satisfies Excel requirements
-	 *
-	 * @param mixed Value to sanitize to an Excel string
-	 * @return mixed Sanitized value
-	 */
-	public static function checkString($pValue = null)
-	{
-		if ($pValue instanceof PHPExcel_RichText) {
-			// TODO: Sanitize Rich-Text string (max. character count is 32,767)
-			return $pValue;
-		}
-
-		// string must never be longer than 32,767 characters, truncate if necessary
-		$pValue = PHPExcel_Shared_String::Substring($pValue, 0, 32767);
-
-		// we require that newline is represented as "\n" in core, not as "\r\n" or "\r"
-		$pValue = str_replace(array("\r\n", "\r"), "\n", $pValue);
-
-		return $pValue;
-	}
-
-	/**
-	 * Check a value that it is a valid error code
-	 *
-	 * @param mixed Value to sanitize to an Excel error code
-	 * @return string Sanitized value
-	 */
-	public static function checkErrorCode($pValue = null)
-	{
-		$pValue = (string)$pValue;
-
-		if ( !array_key_exists($pValue, self::$_errorCodes) ) {
-			$pValue = '#NULL!';
-		}
-
-		return $pValue;
-	}
-
-}
diff --git a/admin/survey/excel/PHPExcel/Cell/DataValidation.php b/admin/survey/excel/PHPExcel/Cell/DataValidation.php
deleted file mode 100644
index 603a8b7..0000000
--- a/admin/survey/excel/PHPExcel/Cell/DataValidation.php
+++ /dev/null
@@ -1,474 +0,0 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2012 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_Cell
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version    1.7.8, 2012-10-12
- */
-
-
-/**
- * PHPExcel_Cell_DataValidation
- *
- * @category   PHPExcel
- * @package    PHPExcel_Cell
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_Cell_DataValidation
-{
-	/* Data validation types */
-	const TYPE_NONE			= 'none';
-	const TYPE_CUSTOM		= 'custom';
-	const TYPE_DATE			= 'date';
-	const TYPE_DECIMAL		= 'decimal';
-	const TYPE_LIST			= 'list';
-	const TYPE_TEXTLENGTH	= 'textLength';
-	const TYPE_TIME			= 'time';
-	const TYPE_WHOLE		= 'whole';
-
-	/* Data validation error styles */
-	const STYLE_STOP		= 'stop';
-	const STYLE_WARNING		= 'warning';
-	const STYLE_INFORMATION	= 'information';
-
-	/* Data validation operators */
-	const OPERATOR_BETWEEN				= 'between';
-	const OPERATOR_EQUAL				= 'equal';
-	const OPERATOR_GREATERTHAN			= 'greaterThan';
-	const OPERATOR_GREATERTHANOREQUAL	= 'greaterThanOrEqual';
-	const OPERATOR_LESSTHAN				= 'lessThan';
-	const OPERATOR_LESSTHANOREQUAL		= 'lessThanOrEqual';
-	const OPERATOR_NOTBETWEEN			= 'notBetween';
-	const OPERATOR_NOTEQUAL				= 'notEqual';
-
-    /**
-     * Formula 1
-     *
-     * @var string
-     */
-    private $_formula1;
-
-    /**
-     * Formula 2
-     *
-     * @var string
-     */
-    private $_formula2;
-
-    /**
-     * Type
-     *
-     * @var string
-     */
-    private $_type = PHPExcel_Cell_DataValidation::TYPE_NONE;
-
-    /**
-     * Error style
-     *
-     * @var string
-     */
-    private $_errorStyle = PHPExcel_Cell_DataValidation::STYLE_STOP;
-
-    /**
-     * Operator
-     *
-     * @var string
-     */
-    private $_operator;
-
-    /**
-     * Allow Blank
-     *
-     * @var boolean
-     */
-    private $_allowBlank;
-
-    /**
-     * Show DropDown
-     *
-     * @var boolean
-     */
-    private $_showDropDown;
-
-    /**
-     * Show InputMessage
-     *
-     * @var boolean
-     */
-    private $_showInputMessage;
-
-    /**
-     * Show ErrorMessage
-     *
-     * @var boolean
-     */
-    private $_showErrorMessage;
-
-    /**
-     * Error title
-     *
-     * @var string
-     */
-    private $_errorTitle;
-
-    /**
-     * Error
-     *
-     * @var string
-     */
-    private $_error;
-
-    /**
-     * Prompt title
-     *
-     * @var string
-     */
-    private $_promptTitle;
-
-    /**
-     * Prompt
-     *
-     * @var string
-     */
-    private $_prompt;
-
-    /**
-     * Create a new PHPExcel_Cell_DataValidation
-     *
-     * @throws	Exception
-     */
-    public function __construct()
-    {
-    	// Initialise member variables
-		$this->_formula1 			= '';
-		$this->_formula2 			= '';
-		$this->_type 				= PHPExcel_Cell_DataValidation::TYPE_NONE;
-		$this->_errorStyle 			= PHPExcel_Cell_DataValidation::STYLE_STOP;
-		$this->_operator 			= '';
-		$this->_allowBlank 			= false;
-		$this->_showDropDown 		= false;
-		$this->_showInputMessage 	= false;
-		$this->_showErrorMessage 	= false;
-		$this->_errorTitle 			= '';
-		$this->_error 				= '';
-		$this->_promptTitle 		= '';
-		$this->_prompt 				= '';
-    }
-
-	/**
-	 * Get Formula 1
-	 *
-	 * @return string
-	 */
-	public function getFormula1() {
-		return $this->_formula1;
-	}
-
-	/**
-	 * Set Formula 1
-	 *
-	 * @param	string	$value
-	 * @return PHPExcel_Cell_DataValidation
-	 */
-	public function setFormula1($value = '') {
-		$this->_formula1 = $value;
-		return $this;
-	}
-
-	/**
-	 * Get Formula 2
-	 *
-	 * @return string
-	 */
-	public function getFormula2() {
-		return $this->_formula2;
-	}
-
-	/**
-	 * Set Formula 2
-	 *
-	 * @param	string	$value
-	 * @return PHPExcel_Cell_DataValidation
-	 */
-	public function setFormula2($value = '') {
-		$this->_formula2 = $value;
-		return $this;
-	}
-
-	/**
-	 * Get Type
-	 *
-	 * @return string
-	 */
-	public function getType() {
-		return $this->_type;
-	}
-
-	/**
-	 * Set Type
-	 *
-	 * @param	string	$value
-	 * @return PHPExcel_Cell_DataValidation
-	 */
-	public function setType($value = PHPExcel_Cell_DataValidation::TYPE_NONE) {
-		$this->_type = $value;
-		return $this;
-	}
-
-	/**
-	 * Get Error style
-	 *
-	 * @return string
-	 */
-	public function getErrorStyle() {
-		return $this->_errorStyle;
-	}
-
-	/**
-	 * Set Error style
-	 *
-	 * @param	string	$value
-	 * @return PHPExcel_Cell_DataValidation
-	 */
-	public function setErrorStyle($value = PHPExcel_Cell_DataValidation::STYLE_STOP) {
-		$this->_errorStyle = $value;
-		return $this;
-	}
-
-	/**
-	 * Get Operator
-	 *
-	 * @return string
-	 */
-	public function getOperator() {
-		return $this->_operator;
-	}
-
-	/**
-	 * Set Operator
-	 *
-	 * @param	string	$value
-	 * @return PHPExcel_Cell_DataValidation
-	 */
-	public function setOperator($value = '') {
-		$this->_operator = $value;
-		return $this;
-	}
-
-	/**
-	 * Get Allow Blank
-	 *
-	 * @return boolean
-	 */
-	public function getAllowBlank() {
-		return $this->_allowBlank;
-	}
-
-	/**
-	 * Set Allow Blank
-	 *
-	 * @param	boolean	$value
-	 * @return PHPExcel_Cell_DataValidation
-	 */
-	public function setAllowBlank($value = false) {
-		$this->_allowBlank = $value;
-		return $this;
-	}
-
-	/**
-	 * Get Show DropDown
-	 *
-	 * @return boolean
-	 */
-	public function getShowDropDown() {
-		return $this->_showDropDown;
-	}
-
-	/**
-	 * Set Show DropDown
-	 *
-	 * @param	boolean	$value
-	 * @return PHPExcel_Cell_DataValidation
-	 */
-	public function setShowDropDown($value = false) {
-		$this->_showDropDown = $value;
-		return $this;
-	}
-
-	/**
-	 * Get Show InputMessage
-	 *
-	 * @return boolean
-	 */
-	public function getShowInputMessage() {
-		return $this->_showInputMessage;
-	}
-
-	/**
-	 * Set Show InputMessage
-	 *
-	 * @param	boolean	$value
-	 * @return PHPExcel_Cell_DataValidation
-	 */
-	public function setShowInputMessage($value = false) {
-		$this->_showInputMessage = $value;
-		return $this;
-	}
-
-	/**
-	 * Get Show ErrorMessage
-	 *
-	 * @return boolean
-	 */
-	public function getShowErrorMessage() {
-		return $this->_showErrorMessage;
-	}
-
-	/**
-	 * Set Show ErrorMessage
-	 *
-	 * @param	boolean	$value
-	 * @return PHPExcel_Cell_DataValidation
-	 */
-	public function setShowErrorMessage($value = false) {
-		$this->_showErrorMessage = $value;
-		return $this;
-	}
-
-	/**
-	 * Get Error title
-	 *
-	 * @return string
-	 */
-	public function getErrorTitle() {
-		return $this->_errorTitle;
-	}
-
-	/**
-	 * Set Error title
-	 *
-	 * @param	string	$value
-	 * @return PHPExcel_Cell_DataValidation
-	 */
-	public function setErrorTitle($value = '') {
-		$this->_errorTitle = $value;
-		return $this;
-	}
-
-	/**
-	 * Get Error
-	 *
-	 * @return string
-	 */
-	public function getError() {
-		return $this->_error;
-	}
-
-	/**
-	 * Set Error
-	 *
-	 * @param	string	$value
-	 * @return PHPExcel_Cell_DataValidation
-	 */
-	public function setError($value = '') {
-		$this->_error = $value;
-		return $this;
-	}
-
-	/**
-	 * Get Prompt title
-	 *
-	 * @return string
-	 */
-	public function getPromptTitle() {
-		return $this->_promptTitle;
-	}
-
-	/**
-	 * Set Prompt title
-	 *
-	 * @param	string	$value
-	 * @return PHPExcel_Cell_DataValidation
-	 */
-	public function setPromptTitle($value = '') {
-		$this->_promptTitle = $value;
-		return $this;
-	}
-
-	/**
-	 * Get Prompt
-	 *
-	 * @return string
-	 */
-	public function getPrompt() {
-		return $this->_prompt;
-	}
-
-	/**
-	 * Set Prompt
-	 *
-	 * @param	string	$value
-	 * @return PHPExcel_Cell_DataValidation
-	 */
-	public function setPrompt($value = '') {
-		$this->_prompt = $value;
-		return $this;
-	}
-
-	/**
-	 * Get hash code
-	 *
-	 * @return string	Hash code
-	 */
-	public function getHashCode() {
-    	return md5(
-    		  $this->_formula1
-    		. $this->_formula2
-    		. $this->_type = PHPExcel_Cell_DataValidation::TYPE_NONE
-    		. $this->_errorStyle = PHPExcel_Cell_DataValidation::STYLE_STOP
-    		. $this->_operator
-    		. ($this->_allowBlank ? 't' : 'f')
-    		. ($this->_showDropDown ? 't' : 'f')
-    		. ($this->_showInputMessage ? 't' : 'f')
-    		. ($this->_showErrorMessage ? 't' : 'f')
-    		. $this->_errorTitle
-    		. $this->_error
-    		. $this->_promptTitle
-    		. $this->_prompt
-    		. __CLASS__
-    	);
-    }
-
-	/**
-	 * Implement PHP __clone to create a deep clone, not just a shallow copy.
-	 */
-	public function __clone() {
-		$vars = get_object_vars($this);
-		foreach ($vars as $key => $value) {
-			if (is_object($value)) {
-				$this->$key = clone $value;
-			} else {
-				$this->$key = $value;
-			}
-		}
-	}
-}
diff --git a/admin/survey/excel/PHPExcel/Cell/DefaultValueBinder.php b/admin/survey/excel/PHPExcel/Cell/DefaultValueBinder.php
deleted file mode 100644
index 26750f5..0000000
--- a/admin/survey/excel/PHPExcel/Cell/DefaultValueBinder.php
+++ /dev/null
@@ -1,106 +0,0 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2012 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_Cell
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version    1.7.8, 2012-10-12
- */
-
-
-/** PHPExcel root directory */
-if (!defined('PHPEXCEL_ROOT')) {
-	/**
-	 * @ignore
-	 */
-	define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../');
-	require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');
-}
-
-
-/**
- * PHPExcel_Cell_DefaultValueBinder
- *
- * @category   PHPExcel
- * @package    PHPExcel_Cell
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_Cell_DefaultValueBinder implements PHPExcel_Cell_IValueBinder
-{
-	/**
-	 * Bind value to a cell
-	 *
-	 * @param PHPExcel_Cell $cell	Cell to bind value to
-	 * @param mixed $value			Value to bind in cell
-	 * @return boolean
-	 */
-	public function bindValue(PHPExcel_Cell $cell, $value = null)
-	{
-		// sanitize UTF-8 strings
-		if (is_string($value)) {
-			$value = PHPExcel_Shared_String::SanitizeUTF8($value);
-		}
-
-		// Set value explicit
-		$cell->setValueExplicit( $value, self::dataTypeForValue($value) );
-
-		// Done!
-		return true;
-	}
-
-	/**
-	 * DataType for value
-	 *
-	 * @param	mixed 	$pValue
-	 * @return 	int
-	 */
-	public static function dataTypeForValue($pValue = null) {
-		// Match the value against a few data types
-		if (is_null($pValue)) {
-			return PHPExcel_Cell_DataType::TYPE_NULL;
-
-		} elseif ($pValue === '') {
-			return PHPExcel_Cell_DataType::TYPE_STRING;
-
-		} elseif ($pValue instanceof PHPExcel_RichText) {
-			return PHPExcel_Cell_DataType::TYPE_INLINE;
-
-		} elseif ($pValue{0} === '=' && strlen($pValue) > 1) {
-			return PHPExcel_Cell_DataType::TYPE_FORMULA;
-
-		} elseif (is_bool($pValue)) {
-			return PHPExcel_Cell_DataType::TYPE_BOOL;
-
-		} elseif (is_float($pValue) || is_int($pValue)) {
-			return PHPExcel_Cell_DataType::TYPE_NUMERIC;
-
-		} elseif (preg_match('/^\-?([0-9]+\\.?[0-9]*|[0-9]*\\.?[0-9]+)$/', $pValue)) {
-			return PHPExcel_Cell_DataType::TYPE_NUMERIC;
-
-		} elseif (is_string($pValue) && array_key_exists($pValue, PHPExcel_Cell_DataType::getErrorCodes())) {
-			return PHPExcel_Cell_DataType::TYPE_ERROR;
-
-		} else {
-			return PHPExcel_Cell_DataType::TYPE_STRING;
-
-		}
-	}
-}
diff --git a/admin/survey/excel/PHPExcel/Cell/Hyperlink.php b/admin/survey/excel/PHPExcel/Cell/Hyperlink.php
deleted file mode 100644
index be52d40..0000000
--- a/admin/survey/excel/PHPExcel/Cell/Hyperlink.php
+++ /dev/null
@@ -1,127 +0,0 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2012 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_Cell
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version    1.7.8, 2012-10-12
- */
-
-
-/**
- * PHPExcel_Cell_Hyperlink
- *
- * @category   PHPExcel
- * @package    PHPExcel_Cell
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_Cell_Hyperlink
-{
-	/**
-	 * URL to link the cell to
-	 *
-	 * @var string
-	 */
-	private $_url;
-
-	/**
-	 * Tooltip to display on the hyperlink
-	 *
-	 * @var string
-	 */
-	private $_tooltip;
-
-    /**
-     * Create a new PHPExcel_Cell_Hyperlink
-     *
-     * @param 	string				$pUrl		Url to link the cell to
-     * @param	string				$pTooltip	Tooltip to display on the hyperlink
-     * @throws	Exception
-     */
-    public function __construct($pUrl = '', $pTooltip = '')
-    {
-    	// Initialise member variables
-		$this->_url 		= $pUrl;
-		$this->_tooltip 	= $pTooltip;
-    }
-
-	/**
-	 * Get URL
-	 *
-	 * @return string
-	 */
-	public function getUrl() {
-		return $this->_url;
-	}
-
-	/**
-	 * Set URL
-	 *
-	 * @param	string	$value
-	 * @return PHPExcel_Cell_Hyperlink
-	 */
-	public function setUrl($value = '') {
-		$this->_url = $value;
-		return $this;
-	}
-
-	/**
-	 * Get tooltip
-	 *
-	 * @return string
-	 */
-	public function getTooltip() {
-		return $this->_tooltip;
-	}
-
-	/**
-	 * Set tooltip
-	 *
-	 * @param	string	$value
-	 * @return PHPExcel_Cell_Hyperlink
-	 */
-	public function setTooltip($value = '') {
-		$this->_tooltip = $value;
-		return $this;
-	}
-
-	/**
-	 * Is this hyperlink internal? (to another sheet)
-	 *
-	 * @return boolean
-	 */
-	public function isInternal() {
-		return strpos($this->_url, 'sheet://') !== false;
-	}
-
-	/**
-	 * Get hash code
-	 *
-	 * @return string	Hash code
-	 */
-	public function getHashCode() {
-    	return md5(
-    		  $this->_url
-    		. $this->_tooltip
-    		. __CLASS__
-    	);
-    }
-}
diff --git a/admin/survey/excel/PHPExcel/Cell/IValueBinder.php b/admin/survey/excel/PHPExcel/Cell/IValueBinder.php
deleted file mode 100644
index d869ec9..0000000
--- a/admin/survey/excel/PHPExcel/Cell/IValueBinder.php
+++ /dev/null
@@ -1,46 +0,0 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2012 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_Cell
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version    1.7.8, 2012-10-12
- */
-
-
-/**
- * PHPExcel_Cell_IValueBinder
- *
- * @category   PHPExcel
- * @package    PHPExcel_Cell
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-interface PHPExcel_Cell_IValueBinder
-{
-	/**
-	 * Bind value to a cell
-	 *
-	 * @param PHPExcel_Cell $cell	Cell to bind value to
-	 * @param mixed $value			Value to bind in cell
-	 * @return boolean
-	 */
-	public function bindValue(PHPExcel_Cell $cell, $value = null);
-}