TNREGINET Autofill (works in Chrome, Opera and Edge)

A panel appears at the bottom-right of tnreginet.gov.in when a supported form is on the page.
It has two tabs. It opens the EC tab automatically on the EC application page.

Search tab ("Step 1 - Search Document"):
  One button per Document Type (Regular Document, Loan Orders, Memo Copy, Court Orders,
  Awards, Adjudication). Clicking one selects that type, then Sub Registrar Office, Year
  and Document No. (defaults: Thiruvadanai, 1865, 745).

EC tab (Encumbrance Certificate application):
  "Fill EC form" fills Zone, District, Sub Registrar Office, EC Start/End Date,
  Registration Village, Survey No. and Subdivision No. (defaults: Ramanathapuram,
  Karaikudi, Devakkottai, 01-Jan-1975, 01-Oct-2026, Thidakottai; Survey/Subdivision empty).
  Empty boxes are skipped. It does not press "Add"; check the values and press it yourself.

You can change any value in the panel before clicking; your values are remembered.
The captcha is never filled; the cursor is put in the captcha box when there is one.

Install (one time):
  Opera: opera://extensions   Chrome: chrome://extensions   Edge: edge://extensions
  Turn on "Developer mode", click "Load unpacked", choose this folder (the one with manifest.json).
  After replacing fill.js with a new version, click the reload icon on the extension card,
  then reload the TNREGINET page.

If the panel says "Problem: ... is not in the ... list", the site doesn't offer that value;
check the spelling against the dropdown.
