var xday = new Date(2010,11,12);
function countdown () {
    if(!document.getElementById) return;
    var obj = document.getElementById("count");
    var now = new Date();
    var dif = xday.getTime() - now.getTime();
    if(dif < 0) return;
    var days  = Math.floor(dif / (24*60*60*1000));
    dif = dif % (24*60*60*1000);
    var hours = Math.floor(dif / (60*60*1000));
    dif = dif % (60*60*1000);
    var mins  = Math.floor(dif / (60*1000));
    dif = dif % (60*1000);
    var secs  = Math.floor(dif / 1000);
    var str = "グランドエスクード誕生10周年まであと <b class='num'>"
        + days + "<\/b> day <b class='num2'>"
        + hours + "<\/b> h <b class='num2'>"
        + mins + "<\/b> m <b class='num2'>"
        + secs + "<\/b> s";
    obj.innerHTML = str;
    setTimeout("countdown();", 1000);
}