code: protected function toString_attributes() {
  		$s = '';
  		foreach($this->attributes as $a => $v) {
  			$s .= ' '.$a;
  			if ((!$this->attribute_shorttag) || ($v !== $a)) {
  				$quote = (strpos($v, '"') === false) ? '"' : "'";
  				$s .= '='.$quote.$v.$quote;
  			}
  		}
  		return $s;
  	}
docs: Returns all the attributes and their values
  @return string
  @access private