Roadblocks

My plan was to change icon to 'scroll-down' when the webpage is at top, and to 'scroll-up' when the webpage is at end. But, pageAction.setIcon() is not supported in Firefox for Android. So, there goes my dream.
The pageAction icon moves to a dropdown in text form. I thought that pageAction.setTitle() API may be able to change that text ('Scroll Up', 'Scroll Down'). But again it is not supported in Firefox for Android.

Credits

Name		Name	Last commit message	Last commit date
Latest commit History 7 Commits
icons		icons
README.md		README.md
background-script.js		background-script.js
content-script.js		content-script.js
manifest.json		manifest.json