Yes this can be done.
The basic process is as follows:
- the pop up should be a php file with an added variable that dictates what to display
- the php file will call smarty and other includes as per home.php
- the php file assign a template to display.
See help.php for an example
- create a main template (the one referred to above) that includes other templates for the content. (help/index.tpl for an example)
- other templates hold the lanaguage placeholders. (see help/about.tpl)
__________________
ex x-cart guru 
|