I was previously helped to get a javscript function using jquery working - see : JS Fiddle working example
$("[name='COLUMN35']").on('change', function() {
var val = $(this).val();
var reverseVal = (val == 'Yes' ? 'No' : 'Yes')
$("input[value='" + reverseVal + "']:not([name='COLUMN35'])").prop('checked', true);
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<span>Option 1</span><br />
<form>
<label><input type="radio" name="option1" id="option1Yes" value="Yes">Yes</label>
<label><input type="radio" name="option1" id="option1No" value="No">No</label>
<br /><br />
<span>Option 2</span><br />
<label><input type="radio" name="option2" id="option2Yes" value="Yes">Yes
</label>
<label><input type="radio" name="option2" id="option2No" value="No">No</label>
<hr />
<span>Unsubscribe from all</span><br />
<label><input type="radio" name="COLUMN35" id="unsubYes" value="Yes">Yes</label>
<label><input type="radio" name="COLUMN35" id="unsubNo" value="No">No</label>
<br /><br />
<input type="submit" value="submit">
</form>
Upon implmenting that same code into the generated form page i am not sure why it does not work - see: Webform with code not working
Unfortunately I am not able to edit the any of the form elements as they are generated automatically but hoping someone might have a different idea to implement - usually the messier the better E.G target the relevant ids to change and maybe not using jquery