This is a similar question I have my folders in
Images
Styles
Text
Videos
I have lots of videos that make the epub too big so can I create a folder called Notes_on_script
and point to the xhtml file from within the main page i.e change
<p class="para1"><span class="span7"><a href="../Text/Notes_on_Script.xhtml"
to point to the same file but in the new Notes on script folder
to something like
<p class="para1"><span class="span7"><a href="../Notes_on_script/Notes_on_Script.xhtml"