How to display average ratings of product in magento?

public function fnGetTotalProductReview($objCurrentProduct)
{
$objReview = Mage::getModel('review/review');
return $objReview ->getTotalReviews($objCurrentProduct->getId(),true);
}

$intTotalReviewPerProduct = fnGetTotalProductReview($_product);

if($intTotalReviewPerProduct > 0){echo $this ->getLayout() ->createBlock('catalog/product_list') ->getReviewsSummaryHtml($_product);
}