Open node as popup with Lightbox 2
In your tpl.php file only have the following

&lt;?php print render($content); ?&gt;


If you want to style it you can wrap divs around. 

Then add a rel="lightframe" attribute in your link that will trigger lightbox.

&lt;a href="http://www.example.com/node/[nid]" rel="lightframe"&gt;Link&lt;/a&gt;