diff -r 5b37998e522e -r 162c1de6545a web/lib/Zend/Form/Element/Checkbox.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/Zend/Form/Element/Checkbox.php	Fri Mar 11 15:05:35 2011 +0100
@@ -0,0 +1,203 @@
+<?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_Form
+ * @subpackage Element
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+
+/** Zend_Form_Element_Xhtml */
+require_once 'Zend/Form/Element/Xhtml.php';
+
+/**
+ * Checkbox form element
+ *
+ * @category   Zend
+ * @package    Zend_Form
+ * @subpackage Element
+ * @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: Checkbox.php 20096 2010-01-06 02:05:09Z bkarwin $
+ */
+class Zend_Form_Element_Checkbox extends Zend_Form_Element_Xhtml
+{
+    /**
+     * Is the checkbox checked?
+     * @var bool
+     */
+    public $checked = false;
+
+    /**
+     * Use formCheckbox view helper by default
+     * @var string
+     */
+    public $helper = 'formCheckbox';
+
+    /**
+     * Options that will be passed to the view helper
+     * @var array
+     */
+    public $options = array(
+        'checkedValue'   => '1',
+        'uncheckedValue' => '0',
+    );
+
+    /**
+     * Value when checked
+     * @var string
+     */
+    protected $_checkedValue = '1';
+
+    /**
+     * Value when not checked
+     * @var string
+     */
+    protected $_uncheckedValue = '0';
+
+    /**
+     * Current value
+     * @var string 0 or 1
+     */
+    protected $_value = '0';
+
+    /**
+     * Set options
+     *
+     * Intercept checked and unchecked values and set them early; test stored
+     * value against checked and unchecked values after configuration.
+     *
+     * @param  array $options
+     * @return Zend_Form_Element_Checkbox
+     */
+    public function setOptions(array $options)
+    {
+        if (array_key_exists('checkedValue', $options)) {
+            $this->setCheckedValue($options['checkedValue']);
+            unset($options['checkedValue']);
+        }
+        if (array_key_exists('uncheckedValue', $options)) {
+            $this->setUncheckedValue($options['uncheckedValue']);
+            unset($options['uncheckedValue']);
+        }
+        parent::setOptions($options);
+
+        $curValue = $this->getValue();
+        $test     = array($this->getCheckedValue(), $this->getUncheckedValue());
+        if (!in_array($curValue, $test)) {
+            $this->setValue($curValue);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Set value
+     *
+     * If value matches checked value, sets to that value, and sets the checked
+     * flag to true.
+     *
+     * Any other value causes the unchecked value to be set as the current
+     * value, and the checked flag to be set as false.
+     *
+     *
+     * @param  mixed $value
+     * @return Zend_Form_Element_Checkbox
+     */
+    public function setValue($value)
+    {
+        if ($value == $this->getCheckedValue()) {
+            parent::setValue($value);
+            $this->checked = true;
+        } else {
+            parent::setValue($this->getUncheckedValue());
+            $this->checked = false;
+        }
+        return $this;
+    }
+
+    /**
+     * Set checked value
+     *
+     * @param  string $value
+     * @return Zend_Form_Element_Checkbox
+     */
+    public function setCheckedValue($value)
+    {
+        $this->_checkedValue = (string) $value;
+        $this->options['checkedValue'] = $value;
+        return $this;
+    }
+
+    /**
+     * Get value when checked
+     *
+     * @return string
+     */
+    public function getCheckedValue()
+    {
+        return $this->_checkedValue;
+    }
+
+    /**
+     * Set unchecked value
+     *
+     * @param  string $value
+     * @return Zend_Form_Element_Checkbox
+     */
+    public function setUncheckedValue($value)
+    {
+        $this->_uncheckedValue = (string) $value;
+        $this->options['uncheckedValue'] = $value;
+        return $this;
+    }
+
+    /**
+     * Get value when not checked
+     *
+     * @return string
+     */
+    public function getUncheckedValue()
+    {
+        return $this->_uncheckedValue;
+    }
+
+    /**
+     * Set checked flag
+     *
+     * @param  bool $flag
+     * @return Zend_Form_Element_Checkbox
+     */
+    public function setChecked($flag)
+    {
+        $this->checked = (bool) $flag;
+        if ($this->checked) {
+            $this->setValue($this->getCheckedValue());
+        } else {
+            $this->setValue($this->getUncheckedValue());
+        }
+        return $this;
+    }
+
+    /**
+     * Get checked flag
+     *
+     * @return bool
+     */
+    public function isChecked()
+    {
+        return $this->checked;
+    }
+}