Dalantech,
Dave's mod changes nothing from your mod. All his does is make threads aware whether there is a wrapper or not.
Currently in your mod tbopen and tbclose has the 10pixel spacers which show up in every stylesheet whether you have a stylesheet graphic specified or not. So if I did not use wrappers for greenday in your mod I would have a 10pixel border around my tables. With his mod installed I would not. You simply put a clean copy or tbopen and tbclose in your template directory. For every stylesheet where you define the CSS classes with images you would create a tbopen-(stylesheet name).tmpl and tbclose-(stylesheet name)/tmpl with your mods. You see the difference? This allows use of multiple stylesheet use without displaying that empty table and making your site look a little funky.
I called the images from CSS classes just like you did. I just name the templates ending name the stylesheet name.
I have only made stylesheets for my default stylesheet and greenday so if you choose infopop you will see the normal tables.
Your mods go together like peanut butter and jelly.
