added js function to check for <li> checked (green/red)

function.js

////////////////////////////////////AIRPLANES///////////////////////////
//////////
//make checked <li> item green after checked
function checkChanges()
{

    $('.radiobutton font').attr('color', 'red');

    $('.radiobutton
:checked').closest('.radiobutton').find('font').attr('color', 'green');
}

$(function()
  {
  checkChanges();
  $('.radiobutton :radio').on('click', checkChanges);
  });
////////////////////////////////////////////////////////////////////////
//////////

on aircraft html

                <li class="radiobutton" onClick="checkChanges()"> added
the onClick