External page content into CSS3 Modal

css3-modal-ajax.js

$('.btn.go').on('click',function(){
  // Set the modal's content as a variable for achcing
  $modalContent = $('.modal-content');

  // Add a loading signifier
  $modalContent.html('Loading...');

  // Get the external URL
  $.ajax({
    url: $(this).attr('href'),
  })
  // When ajax has an error
  .error(function(){
    $modalContent.html('Sorry, an error has occured. Please try again.');
  })
  // When ajax is successful
  .success(function(data){
    $modalContent.html(data);
  });
});

external-page.html

<div class="header">
	<h2>Modal Heading</h2>
</div>
<div class="copy">
	<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>
</div>
<div class="cf footer">
	<a href="#" class="btn">Close</a>
</div>