Why does jsPerf use a Java applet on test pages? 
    Do I have to enable Java to use jsPerf?
    The applet you’re talking about is just a clever trick
    we’re using to expose Java’s nanosecond timer to 
    JavaScript, so we can use it to get more accurate test 
    results. jsPerf will still work fine if you disable 
    Java; it might just take a little longer to run tests.