And last one ... suggestion. This involves work that you didn't want to do, but when creating resources outside of Moodle, it is what it is.
Create a folder called 'resources' and document root of the server. Using the one example used in my research of your site, move the 'chep_19' folder from the course ID folder 4 to the 'resources' folder. Then, in Moodle, use URL link to file and point to your own site:
http://wbilearn.amitmali.org/resources/chep_19/jaliy.html
in a captured frame or a new window. That will serve up that jaliy.html page with whatever content is contained therein even if 'relatively addressed' from the jaliy.html page cause Moodle is taken out of the equation.
'spirit of sharing', Ken