Bookmarklet to input sum value in Calicut university results page.

unical_captcha.js

javascript:(
  function() { 
    var document = window.frames.mainFrame.document,
      fst = document.getElementById('fst').value,
      snd = document.getElementById('snd').value;
    document.getElementById('sum').value = parseInt(fst, 10) + parseInt(snd, 10);
  }
)();