The just launch Like Button for Facebook.

http://developers.facebook.com/docs/reference/plugins/like

But with this code your site will be liked no every single page. So it a need for a dynamic url. Something with "$page_url" I guess...

I found this for WordPress

<iframe src="http://www.facebook.com/plugins/like.php?href=<?php echo urlencode(get_permalink($post->ID)); ?>&amp;layout=standard&amp;show-faces=true&amp;width=500&amp;action=like&amp;colorscheme=light" scrolling="no" frameborder="0" allowTransparency="true" style="border:none; overflow:hidden; width:500px; height:60px"></iframe>

Use $AbsoluteLink ?

Eg. put something like this in the template:

<iframe src="http://www.facebook.com/plugins/like.php?href=$AbsoluteLink&amp;layout=standard&amp;show-faces=true&amp;width=500&amp;action=like&amp;colorscheme=light" scrolling="no" frameborder="0" allowTransparency="true" style="border:none; overflow:hidden; width:500px; height:60px"></iframe>

Perfect! Banal you are the man!

Live: http://novainteractive.at/projects/