public function addTitle($text, $depth = 1) {
		$styles = PHPWord_Style::getStyles();
		if(array_key_exists('Heading_'.$depth, $styles)) {
			$style = 'Heading'.$depth;
		} else {
			$style = null;
		}
		
		$title = new PHPWord_Section_Title($text, $depth, $style);
		
		$data = PHPWord_TOC::addTitle($text, $depth);
		$anchor = $data[0];
		$bookmarkId = $data[1];
		
		$title->setAnchor($anchor);
		$title->setBookmarkId($bookmarkId);
		
		$this->_elementCollection[] = $title;
		return $title;
	}