gistfile1.js

// .........
// countDown(739209)
function countDown(time) {
    var format = function(d) {
        return d > 9 ? d : '0' + d;
    }

    var showUnit = function(d) {
        return d != 1 ? 's' : '';
    }

    var container = $('#countDown');

    function doCount() {
        var d = format(parseInt(time / 86400));
        var h = format(parseInt(time % 86400 / 3600));
        var m = format(parseInt(time % 3600 / 60));
        var s = format(time % 60);

        container.html(
            d + " Day" + showUnit(d) + " " + 
            h + " hour" + showUnit(h) + " " + 
            m + " minute" + showUnit(m) + " " + 
            s + " second" + showUnit(s) + ""
        );

        setTimeout(function(){
            time--;
            doCount()
        }, 1000);
    };

    doCount();
}