code: function format(&$node) {
  		$this->errors = array();
  		if ($this->options['minify_script']) {
  			$a = self::minify_javascript($node, $this->indent_string, true, true);
  			if (is_array($a)) {
  				foreach($a as $error) {
  					$this->errors[] = $error[0]->getMessage().' >>> '.$error[1];
  				}
  			}
  		}
  		return $this->format_html($node);
  	}
docs: Formats HTML/Javascript
  @param DomNode $root
  @see format_html()