The bookmar works for PC only.
For posting a PNR,
1. Go to PNR page
2. Enter your PNR and click on "Post Blank PNR"
3. Click on the link which appears. ...
more...
4. You will see a blank PNR entry, click on refresh which will take you to IR website.
5. Click the Bookmark PNR refresh, it will autofill the pnr and a link will appear on the page.
6. Submit the captcha code and then click post PNR for preduction link on upper left side.
Your PNR will be posted.