Level 5:

To clarify, you need to update the URL, then hit the Go button to the right to update the page, then finally click the newly updated "Next >>" link.

- - -

re: Level 4

Can someone explain how the possible strings break the parseInt()? Source code:

    function startTimer(seconds) {
      seconds = parseInt(seconds) || 3;
      setTimeout(function() { 
        window.confirm("Time is up!");
        window.history.back();
      }, seconds * 1000);
    }

I tried running parseInt() in the console and just got NaNs for `'+alert()+'` and `3'); alert('`.