I have a question similar to the one asked here, but I did not understand the answer given to that question. I would like to use mathjax and JSXGraphs in several widgets with iBooksAuthor, but I would like to add these only once. The default way is to add the necessary js libraries to every widget, but this way the resulting ibook gets very large. Can someone please give more details (or guide me to a website with more details) on how to do this without including these libraries in all widgets?
<script src="../Javascript/my_script.js">