Looking into the inAppBrowser code, it seems to me that the insertCSS and
executeScript are for injecting an external CSS or JS, but looking at the
code example, it seems (to me), that an internal file could be loaded
insertCSS example code:
var ref = window.open('http://apache.org', '_blank',
Taking a quick look at the InAppBrowser.java Android implementation, seems
we just inject a script tag with its src set to exactly what you provided
as the url. Since the src is relative to the IAB page, I would imagine the
examples as written are misleading.
I'm not sure if its possible to
