function &addXML($tag = 'xml', $text = '', $attributes = array(), &$offset = null) {
	#php5e
		return $this->addChild(new $this->childClass_XML($this, $tag, $text, $attributes), $offset);
	}
function &addXML($tag = 'xml', $text = '', $attributes = array(), &$offset = null) {
	#php5e
		return $this->addChild(new $this->childClass_XML($this, $tag, $text, $attributes), $offset);
	}
#php5