Custom Field

<?php
    	$dl = get_post_meta($post->ID, 'DL', true);
    	$demo = get_post_meta($post->ID, 'Demo', true);

   	 if($dl != '' || $demo != '') {
    	// there is at least one image
    	?>

<?php if($dl != '') : ?>
    <!-- code for $dl here -->
<h3><a href="<?php echo get_post_meta($post->ID, 'DL', true); ?>">Download</a></h3>
<?php endif; ?>

<?php if($demo != '') : ?>
<!-- code for $demo here-->
<h3><a href="<?php echo get_post_meta($post->ID, 'Demo', true); ?>">View Demo</a></h3>
<?php endif; ?>

I am trying to add this code on the bottom of my post. I want to display the code if they have atleast one custom field.