<?php
class BigHippo_CatalogPdfAttribute_Helper_Data extends Mage_Core_Helper_Abstract
{
    public function getPdfName($pdfNameId) {
        return $this->getProduct()->getData($pdfNameId);
    }

    public function getPdfUrl($pdfFile) {
        return Mage::getBaseUrl('media') . 'files' . DS . $this->getProduct()->getData($pdfFile) ;
    }
}