function openElement($parser, $element, $attributes) {
		foreach ($attributes as $key => $value) $attr .= $key." : ".$value." - ";
		$added .= "-> openElement element: $element, attribute: $attributes ($attr) <br/>";
	}

	function closeElement($parser, $element) {
		$added .= "-> closeElement element is: $element<br/>";
	}

	function characterData($parser, $data) {
		$added .= "-> characterData data is: [$data]<br/>";
	}
	
	$parser = xml_parser_create();
	$document = $backup;
	xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, false);
	xml_set_element_handler($parser, "openElement", "closeElement");
	xml_set_character_data_handler($parser, "characterData");
	
	if (!xml_parse($parser, $document)) {
		echo "<pre>".$document."</pre>";;
		die(sprintf("XML error: %s at line %d",
		xml_error_string(xml_get_error_code($parser)),
		xml_get_current_line_number($parser)));
   }
	xml_parser_free($parser);