public static function addLinkStyle($styleName, $styles) {
		if(!array_key_exists($styleName, self::$_styleElements)) {
			$style = new PHPWord_Style_Font('link');
			foreach($styles as $key => $value) {
				if(substr($key, 0, 1) != '_') {
					$key = '_'.$key;
				}
				$style->setStyleValue($key, $value);
			}
			
			self::$_styleElements[$styleName] = $style;
		}
	}