/** Gets the request parameters of the items that where marked by the user
	* in the ItemsTableForm of pages like ObjectIndexPage, ObjectPropertyPage and ObjectSearchpage
	* @param Array $requestData with data like $_REQUEST
	* @return Array of String with data like $_REQUEST
	*/
	function getMarkedItemParams($requestData) {
		$result = array(); // php may crash if reference to unitialized var is returned
		reset($requestData);
		foreach ($requestData as $key => $value)
			if (strPos($key, $this->pattern) === 0)
				$result[$key] = $value;
		return $result;
	}

}
?>