send to a friend by classic email

Hi,
I'd like to put a link "send a friend", but I like that user (or guest) use its email software, so I added a plugin:

product: vbulletin
hook location: global_start
title: send to a friend
Plugin PHP Code:

PHP Code:

$pageforfriend=($_SERVER['PHP_SELF']); 


and I put on the navbar the following code:

PHP Code:

<a href="mailto:?subject=See this page&body=Hallo, take a look at this: $pageforfriend">send to a friend</a> 


the problem is that the link shown in the email is
/showthread.php
and not www. site. ext/f24/page-bla-bla.html

How to change php plugin code?
Thanks

This is bad, namely because spammers/robots will abuse this. You will have random emails coming from your server promoting spam produtcs. You should at the least, put a captcha of some sort on this.

as for your link, run the pageforfriend var through this:

include_once 'includes/functions_vbseo.php';
vbseo_startup();
$pageforfriend = vbseo_thread_url_row($thread);

or some variation of that