e_path);
        } else {
          // Currently, the only other option here is to stream from the webcam.
          initWebCam();
        }
      });
    });

    // When the user presses the button, show some copyable text
    function showLink() {
      var expression_base64 = btoa( $('#equation-input').val() );

      var url = [location.protocol, '//', location.host, location.pathname].join('');
      url = url + "?expression=" + expression_base64;

      $('#copyable-link').val(url);
      $('#link-co