var Disc = {
   init : function() {
      var disc = $('disc');
      if(!disc) return;
      var ctime = $('disc-ctime');
      var t = ctime.innerHTML;
      var d = new Date();
      d.setTime(t*1000);
      ctime.innerHTML = d.getFullYear()+'/'+(d.getMonth()+1)+'/'+d.getDate();
   }
};
Event.observe(document,'dom:loaded',Disc.init);