Here is the link code from cocacola.php page:
<a href="CcMoreinfo.php? product_id=<?php echo($WADAproducts->getColumnVal("product_id")); ?>
<?php echo(isset($_GET["pageNum_WADAproducts"])?"& pageNum_WADAproducts =".intval($_GET["pageNum_WADAproducts"]):""); ?>&return=cocacola.php" data-toggle="tooltip" data-placement="top" title="<?php echo($pageNum_WADAproducts->getColumnVal("product_description")); ?>">
</a>
here is the back button link:
<a class="back" href="<?php echo($_GET["return"]); ?><?php echo(isset($_GET["pageNum_WADAproducts_details"])?"?pageNum_WADAproducts_details=".intval($_GET["pageNum_WADAproducts_details"]):""); ?>#rec-<?php echo($WADAproducts_details->getColumnVal("product_id"));?>" id="BackToResults" role="button">Back
</a>