Changing the default date from the Date constructor

Date_hack.js

var defaultDate = '1/10/2013';
window['d8'] = Date;

Date = function(time) {
  return time == null ? new d8(defaultDate) : new d8(time);
}
for (var key in Date.prototype) Date[key] = d8[key];

// fix mootools and d3
Date.parse = d8.parse;
Date.now = d8.now;