public function Checkbox($name, $value = null, $attribs = null) {
		
		$info = $this->_getInfo($name, $value, $attribs);
        extract($info); // name, id, value, attribs, options, listsep, disable
		
		// is the element checked?
        $checked = '';
        if (isset($attribs['checked']) && $attribs['checked']) {
            $checked = ' checked="checked"';
            unset($attribs['checked']);
        } elseif (isset($attribs['checked'])) {
            unset($attribs['checked']);
        }

        // is the element disabled?
        $disabled = '';
        if ($disable) {
            $disabled = ' disabled="disabled"';
        }

        // XHTML or HTML end tag?
        $endTag = ' />';
        if (($this->view instanceof Zend_View_Abstract) && !$this->view->doctype()->isXhtml()) {
            $endTag= '>';
        }

        // build the element
        // ADDED: here we built the hidden field
         $xhtml .= '<input type="hidden"' 
        		. ' name="' . $this->view->escape($name) . '"'
        		. ' value="0"'
        		. $endTag; 
        		
        $xhtml .= '<input type="checkbox"'
               . ' name="' . $this->view->escape($name) . '"'
               . ' id="' . $this->view->escape($id) . '"'
               . ' value="' . $this->view->escape($value) . '"'
               . $checked
               . $disabled
               . $this->_htmlAttribs($attribs)
               . $endTag;
		
		return $xhtml;
	}