You can still use the same method to figure out the template. To find the template to modify, do this - vboptions > General Settings > Add Template Name in HTML Comments > set to Yes . Then go back to your page and view the source code and you will see the name of the template called around your part of the code. (Sometimes the template is the one mentioned at the very top of the page source.)
I clicked yes to add template name in html. I am not sure if I did the rest of the steps correctly. What page am I going back to view the source code for? I searched for headinclude again but could not find anything. Can I just add that javascript somewhere in the head template?