Countdown Timer

timer.js

setInterval(function() {
    var s = new Date(),
        e = new Date(2013, 9, 10, 0, 0, 0),
        t = e.getTime() - s.getTime(),
        x = t / 1000,
        s = '0'+Math.floor(x % 60),
        x = x / 60,
        m = '0'+Math.floor(x % 60),
        x = x / 60,
        h = '0'+Math.floor(x % 24),
        x = x / 24,
        d = Math.floor(x),
        time = [d, h.substr(-2), m.substr(-2), s.substr(-2)].join(':');        

    console.log(time);
}, 1000);