diff -r 5b37998e522e -r 162c1de6545a web/lib/Zend/Measure/Density.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/Zend/Measure/Density.php	Fri Mar 11 15:05:35 2011 +0100
@@ -0,0 +1,206 @@
+<?php
+/**
+ * Zend Framework
+ *
+ * LICENSE
+ *
+ * This source file is subject to the new BSD license that is bundled
+ * with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://framework.zend.com/license/new-bsd
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@zend.com so we can send you a copy immediately.
+ *
+ * @category  Zend
+ * @package   Zend_Measure
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd     New BSD License
+ * @version   $Id: Density.php 20096 2010-01-06 02:05:09Z bkarwin $
+ */
+
+/**
+ * Implement needed classes
+ */
+require_once 'Zend/Measure/Abstract.php';
+require_once 'Zend/Locale.php';
+
+/**
+ * Class for handling density conversions
+ *
+ * @category   Zend
+ * @package    Zend_Measure
+ * @subpackage Zend_Measure_Density
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+class Zend_Measure_Density extends Zend_Measure_Abstract
+{
+    const STANDARD = 'KILOGRAM_PER_CUBIC_METER';
+
+    const ALUMINIUM                      = 'ALUMINIUM';
+    const COPPER                         = 'COPPER';
+    const GOLD                           = 'GOLD';
+    const GRAIN_PER_CUBIC_FOOT           = 'GRAIN_PER_CUBIC_FOOT';
+    const GRAIN_PER_CUBIC_INCH           = 'GRAIN_PER_CUBIC_INCH';
+    const GRAIN_PER_CUBIC_YARD           = 'GRAIN_PER_CUBIC_YARD';
+    const GRAIN_PER_GALLON               = 'GRAIN_PER_GALLON';
+    const GRAIN_PER_GALLON_US            = 'GRAIN_PER_GALLON_US';
+    const GRAM_PER_CUBIC_CENTIMETER      = 'GRAM_PER_CUBIC_CENTIMETER';
+    const GRAM_PER_CUBIC_DECIMETER       = 'GRAM_PER_CUBIC_DECIMETER';
+    const GRAM_PER_CUBIC_METER           = 'GRAM_PER_CUBIC_METER';
+    const GRAM_PER_LITER                 = 'GRAM_PER_LITER';
+    const GRAM_PER_MILLILITER            = 'GRAM_PER_MILLILITER';
+    const IRON                           = 'IRON';
+    const KILOGRAM_PER_CUBIC_CENTIMETER  = 'KILOGRAM_PER_CUBIC_CENTIMETER';
+    const KILOGRAM_PER_CUBIC_DECIMETER   = 'KILOGRAM_PER_CUBIC_DECIMETER';
+    const KILOGRAM_PER_CUBIC_METER       = 'KILOGRAM_PER_CUBIC_METER';
+    const KILOGRAM_PER_CUBIC_MILLIMETER  = 'KILOGRAM_PER_CUBIC_MILLIMETER';
+    const KILOGRAM_PER_LITER             = 'KILOGRAM_PER_LITER';
+    const KILOGRAM_PER_MILLILITER        = 'KILOGRAM_PER_MILLILITER';
+    const LEAD                           = 'LEAD';
+    const MEGAGRAM_PER_CUBIC_CENTIMETER  = 'MEGAGRAM_PER_CUBIC_CENTIMETER';
+    const MEGAGRAM_PER_CUBIC_DECIMETER   = 'MEGAGRAM_PER_CUBIC_DECIMETER';
+    const MEGAGRAM_PER_CUBIC_METER       = 'MEGAGRAM_PER_CUBIC_METER';
+    const MEGAGRAM_PER_LITER             = 'MEGAGRAM_PER_LITER';
+    const MEGAGRAM_PER_MILLILITER        = 'MEGAGRAM_PER_MILLILITER';
+    const MICROGRAM_PER_CUBIC_CENTIMETER = 'MICROGRAM_PER_CUBIC_CENTIMETER';
+    const MICROGRAM_PER_CUBIC_DECIMETER  = 'MICROGRAM_PER_CUBIC_DECIMETER';
+    const MICROGRAM_PER_CUBIC_METER      = 'MICROGRAM_PER_CUBIC_METER';
+    const MICROGRAM_PER_LITER            = 'MICROGRAM_PER_LITER';
+    const MICROGRAM_PER_MILLILITER       = 'MICROGRAM_PER_MILLILITER';
+    const MILLIGRAM_PER_CUBIC_CENTIMETER = 'MILLIGRAM_PER_CUBIC_CENTIMETER';
+    const MILLIGRAM_PER_CUBIC_DECIMETER  = 'MILLIGRAM_PER_CUBIC_DECIMETER';
+    const MILLIGRAM_PER_CUBIC_METER      = 'MILLIGRAM_PER_CUBIC_METER';
+    const MILLIGRAM_PER_LITER            = 'MILLIGRAM_PER_LITER';
+    const MILLIGRAM_PER_MILLILITER       = 'MILLIGRAM_PER_MILLILITER';
+    const OUNCE_PER_CUBIC_FOOT           = 'OUNCE_PER_CUBIC_FOOT';
+    const OUNCR_PER_CUBIC_FOOT_TROY      = 'OUNCE_PER_CUBIC_FOOT_TROY';
+    const OUNCE_PER_CUBIC_INCH           = 'OUNCE_PER_CUBIC_INCH';
+    const OUNCE_PER_CUBIC_INCH_TROY      = 'OUNCE_PER_CUBIC_INCH_TROY';
+    const OUNCE_PER_CUBIC_YARD           = 'OUNCE_PER_CUBIC_YARD';
+    const OUNCE_PER_CUBIC_YARD_TROY      = 'OUNCE_PER_CUBIC_YARD_TROY';
+    const OUNCE_PER_GALLON               = 'OUNCE_PER_GALLON';
+    const OUNCE_PER_GALLON_US            = 'OUNCE_PER_GALLON_US';
+    const OUNCE_PER_GALLON_TROY          = 'OUNCE_PER_GALLON_TROY';
+    const OUNCE_PER_GALLON_US_TROY       = 'OUNCE_PER_GALLON_US_TROY';
+    const POUND_PER_CIRCULAR_MIL_FOOT    = 'POUND_PER_CIRCULAR_MIL_FOOT';
+    const POUND_PER_CUBIC_FOOT           = 'POUND_PER_CUBIC_FOOT';
+    const POUND_PER_CUBIC_INCH           = 'POUND_PER_CUBIC_INCH';
+    const POUND_PER_CUBIC_YARD           = 'POUND_PER_CUBIC_YARD';
+    const POUND_PER_GALLON               = 'POUND_PER_GALLON';
+    const POUND_PER_KILOGALLON           = 'POUND_PER_KILOGALLON';
+    const POUND_PER_MEGAGALLON           = 'POUND_PER_MEGAGALLON';
+    const POUND_PER_GALLON_US            = 'POUND_PER_GALLON_US';
+    const POUND_PER_KILOGALLON_US        = 'POUND_PER_KILOGALLON_US';
+    const POUND_PER_MEGAGALLON_US        = 'POUND_PER_MEGAGALLON_US';
+    const SILVER                         = 'SILVER';
+    const SLUG_PER_CUBIC_FOOT            = 'SLUG_PER_CUBIC_FOOT';
+    const SLUG_PER_CUBIC_INCH            = 'SLUG_PER_CUBIC_INCH';
+    const SLUG_PER_CUBIC_YARD            = 'SLUG_PER_CUBIC_YARD';
+    const SLUG_PER_GALLON                = 'SLUG_PER_GALLON';
+    const SLUG_PER_GALLON_US             = 'SLUG_PER_GALLON_US';
+    const TON_PER_CUBIC_FOOT_LONG        = 'TON_PER_CUBIC_FOOT_LONG';
+    const TON_PER_CUBIC_FOOT             = 'TON_PER_CUBIC_FOOT';
+    const TON_PER_CUBIC_INCH_LONG        = 'TON_PER_CUBIC_INCH_LONG';
+    const TON_PER_CUBIC_INCH             = 'TON_PER_CUBIC_INCH';
+    const TON_PER_CUBIC_YARD_LONG        = 'TON_PER_CUBIC_YARD_LONG';
+    const TON_PER_CUBIC_YARD             = 'TON_PER_CUBIC_YARD';
+    const TON_PER_GALLON_LONG            = 'TON_PER_GALLON_LONG';
+    const TON_PER_GALLON_US_LONG         = 'TON_PER_GALLON_US_LONG';
+    const TON_PER_GALLON                 = 'TON_PER_GALLON';
+    const TON_PER_GALLON_US              = 'TON_PER_GALLON_US';
+    const TONNE_PER_CUBIC_CENTIMETER     = 'TONNE_PER_CUBIC_CENTIMETER';
+    const TONNE_PER_CUBIC_DECIMETER      = 'TONNE_PER_CUBIC_DECIMETER';
+    const TONNE_PER_CUBIC_METER          = 'TONNE_PER_CUBIC_METER';
+    const TONNE_PER_LITER                = 'TONNE_PER_LITER';
+    const TONNE_PER_MILLILITER           = 'TONNE_PER_MILLILITER';
+    const WATER                          = 'WATER';
+
+    /**
+     * Calculations for all density units
+     *
+     * @var array
+     */
+    protected $_units = array(
+        'ALUMINIUM'                 => array('2643',           'aluminium'),
+        'COPPER'                    => array('8906',           'copper'),
+        'GOLD'                      => array('19300',          'gold'),
+        'GRAIN_PER_CUBIC_FOOT'      => array('0.0022883519',   'gr/ft³'),
+        'GRAIN_PER_CUBIC_INCH'      => array('3.9542721',      'gr/in³'),
+        'GRAIN_PER_CUBIC_YARD'      => array('0.000084753774', 'gr/yd³'),
+        'GRAIN_PER_GALLON'          => array('0.014253768',    'gr/gal'),
+        'GRAIN_PER_GALLON_US'       => array('0.017118061',    'gr/gal'),
+        'GRAM_PER_CUBIC_CENTIMETER' => array('1000',           'g/cm³'),
+        'GRAM_PER_CUBIC_DECIMETER'  => array('1',              'g/dm³'),
+        'GRAM_PER_CUBIC_METER'      => array('0.001',          'g/m³'),
+        'GRAM_PER_LITER'            => array('1',              'g/l'),
+        'GRAM_PER_MILLILITER'       => array('1000',           'g/ml'),
+        'IRON'                      => array('7658',           'iron'),
+        'KILOGRAM_PER_CUBIC_CENTIMETER' => array('1000000',    'kg/cm³'),
+        'KILOGRAM_PER_CUBIC_DECIMETER'  => array('1000',       'kg/dm³'),
+        'KILOGRAM_PER_CUBIC_METER'  => array('1',              'kg/m³'),
+        'KILOGRAM_PER_CUBIC_MILLIMETER' => array('1000000000', 'kg/l'),
+        'KILOGRAM_PER_LITER'        => array('1000',           'kg/ml'),
+        'KILOGRAM_PER_MILLILITER'   => array('1000000',        'kg/ml'),
+        'LEAD'                      => array('11370',          'lead'),
+        'MEGAGRAM_PER_CUBIC_CENTIMETER' => array('1.0e+9',     'Mg/cm³'),
+        'MEGAGRAM_PER_CUBIC_DECIMETER'  => array('1000000',    'Mg/dm³'),
+        'MEGAGRAM_PER_CUBIC_METER'  => array('1000',           'Mg/m³'),
+        'MEGAGRAM_PER_LITER'        => array('1000000',        'Mg/l'),
+        'MEGAGRAM_PER_MILLILITER'   => array('1.0e+9',         'Mg/ml'),
+        'MICROGRAM_PER_CUBIC_CENTIMETER' => array('0.001',     'µg/cm³'),
+        'MICROGRAM_PER_CUBIC_DECIMETER'  => array('1.0e-6',    'µg/dm³'),
+        'MICROGRAM_PER_CUBIC_METER' => array('1.0e-9',         'µg/m³'),
+        'MICROGRAM_PER_LITER'       => array('1.0e-6',         'µg/l'),
+        'MICROGRAM_PER_MILLILITER'  => array('0.001',          'µg/ml'),
+        'MILLIGRAM_PER_CUBIC_CENTIMETER' => array('1',         'mg/cm³'),
+        'MILLIGRAM_PER_CUBIC_DECIMETER'  => array('0.001',     'mg/dm³'),
+        'MILLIGRAM_PER_CUBIC_METER' => array('0.000001',       'mg/m³'),
+        'MILLIGRAM_PER_LITER'       => array('0.001',          'mg/l'),
+        'MILLIGRAM_PER_MILLILITER'  => array('1',              'mg/ml'),
+        'OUNCE_PER_CUBIC_FOOT'      => array('1.001154',       'oz/ft³'),
+        'OUNCE_PER_CUBIC_FOOT_TROY' => array('1.0984089',      'oz/ft³'),
+        'OUNCE_PER_CUBIC_INCH'      => array('1729.994',       'oz/in³'),
+        'OUNCE_PER_CUBIC_INCH_TROY' => array('1898.0506',      'oz/in³'),
+        'OUNCE_PER_CUBIC_YARD'      => array('0.037079776',    'oz/yd³'),
+        'OUNCE_PER_CUBIC_YARD_TROY' => array('0.040681812',    'oz/yd³'),
+        'OUNCE_PER_GALLON'          => array('6.2360233',      'oz/gal'),
+        'OUNCE_PER_GALLON_US'       => array('7.4891517',      'oz/gal'),
+        'OUNCE_PER_GALLON_TROY'     => array('6.8418084',      'oz/gal'),
+        'OUNCE_PER_GALLON_US_TROY'  => array('8.2166693',      'oz/gal'),
+        'POUND_PER_CIRCULAR_MIL_FOOT' => array('2.9369291',    'lb/cmil ft'),
+        'POUND_PER_CUBIC_FOOT'      => array('16.018463',      'lb/in³'),
+        'POUND_PER_CUBIC_INCH'      => array('27679.905',      'lb/in³'),
+        'POUND_PER_CUBIC_YARD'      => array('0.59327642',     'lb/yd³'),
+        'POUND_PER_GALLON'          => array('99.776373',      'lb/gal'),
+        'POUND_PER_KILOGALLON'      => array('0.099776373',    'lb/kgal'),
+        'POUND_PER_MEGAGALLON'      => array('0.000099776373', 'lb/Mgal'),
+        'POUND_PER_GALLON_US'       => array('119.82643',      'lb/gal'),
+        'POUND_PER_KILOGALLON_US'   => array('0.11982643',     'lb/kgal'),
+        'POUND_PER_MEGAGALLON_US'   => array('0.00011982643',  'lb/Mgal'),
+        'SILVER'                    => array('10510',          'silver'),
+        'SLUG_PER_CUBIC_FOOT'       => array('515.37882',      'slug/ft³'),
+        'SLUG_PER_CUBIC_INCH'       => array('890574.6',       'slug/in³'),
+        'SLUG_PER_CUBIC_YARD'       => array('19.088104',      'slug/yd³'),
+        'SLUG_PER_GALLON'           => array('3210.2099',      'slug/gal'),
+        'SLUG_PER_GALLON_US'        => array('3855.3013',      'slug/gal'),
+        'TON_PER_CUBIC_FOOT_LONG'   => array('35881.358',      't/ft³'),
+        'TON_PER_CUBIC_FOOT'        => array('32036.927',      't/ft³'),
+        'TON_PER_CUBIC_INCH_LONG'   => array('6.2202987e+7',   't/in³'),
+        'TON_PER_CUBIC_INCH'        => array('5.5359809e+7',   't/in³'),
+        'TON_PER_CUBIC_YARD_LONG'   => array('1328.9392',      't/yd³'),
+        'TON_PER_CUBIC_YARD'        => array('1186.5528',      't/yd³'),
+        'TON_PER_GALLON_LONG'       => array('223499.07',      't/gal'),
+        'TON_PER_GALLON_US_LONG'    => array('268411.2',       't/gal'),
+        'TON_PER_GALLON'            => array('199522.75',      't/gal'),
+        'TON_PER_GALLON_US'         => array('239652.85',      't/gal'),
+        'TONNE_PER_CUBIC_CENTIMETER' => array('1.0e+9',        't/cm³'),
+        'TONNE_PER_CUBIC_DECIMETER'  => array('1000000',       't/dm³'),
+        'TONNE_PER_CUBIC_METER'     => array('1000',           't/m³'),
+        'TONNE_PER_LITER'           => array('1000000',        't/l'),
+        'TONNE_PER_MILLILITER'      => array('1.0e+9',         't/ml'),
+        'WATER'                     => array('1000',           'water'),
+        'STANDARD'                  => 'KILOGRAM_PER_CUBIC_METER'
+    );
+}