falk07 on "Find parent post of an attachment"

Hello wp-experts,

I've got a loop with search-results, containing posts, pages and attachments. In case i find an attachment, i'd like to permalink to the containing article - not to the attachment page.
After a little search in this forum, i tried this peace of code:

<?php  if(get_post_type() == 'attachment') {

						 echo get_permalink()."<br />";
						 echo get_permalink($post->post_parent)."<br />";
						 $parent = get_post($post->post_parent);
						 echo get_permalink($parent->post_parent);
					 }
					?>

But every line returns the same permalink: the link to the attachment-page.
Do you have an idea how to do this right?

Thanks in advance,
Alex