Test external JavaScript blocking the webpage:
Loading non-existent external script: https://www.ubuyit.com/none.js
Elapsed time: 460 ms
Loading non-existent external script: https://www.buydiamonds.com/none.js
Elapsed time: 908 ms
Loading non-existent external script: https://www.buyers.com/none.js
Elapsed time: 1355 ms
End page.