I just added this code to the Product_Results.php page and it works.
onerror="this.src = 'noimage.jpg'"
<div class="imageWrapper"> <a href="Products_Detail.php?ProductID=<?php echo(rawurlencode($ProductID)); ?>" title="<?php echo $row_WADAProducts["ProductName"]; ?>"> <img class="WADAResultThumb" border="0" src="imagesupload/<?php echo $row_WADAProducts['ProductThumb']; ?>" onerror="this.src = 'noimage.jpg'" /></a> </div>
But whatever you provide I will use.
Thanks Dani.