public static function get($selector){
		$specificity = $selector->hasNext() ? self::get($selector->getNext()) : new self();
		
		if($selector->getIdentification()) $specificity->a++;
		if($selector->getClasses()) $specificity->b+= count($selector->getClasses());
		if($selector->getAttributes()) $specificity->b+= count($selector->getAttributes());
		if($selector->getPseudos()) $specificity->b+= count($selector->getPseudos());
		if($selector->getTagName()) $specificity->c++;
		
		return $specificity;
	}