FF and Chrome won't allow me to stop an unresponsive script, that is, a popup doesn't appear that gives me the choice. I'm learning from Kevin Yank's Learnable video on JS and there's a simple JS file where he demonstrates debugging, but when I edit it and refresh my page, I just get the Mac colored pinwheel and the popup that would normally appear, never appears. Seems that now Firefox has finally displayed the popup but not Chrome. FF did it after about 4 or 5 minutes, which means that, at this rate I'll never get my script debugged. Is there some way to stop an unresponsive script sooner in FF, or to even stop it at all in Chrome?