d = new Date();
d.setUTCFullYear(2004);
d.setUTCMonth(1);
d.setUTCDate(29);
d.setUTCHours(2);
d.setUTCMinutes(45);
d.setUTCSeconds(26);
alert(d); // -> Sat Feb 28 2004 23:45:26 GMT-0300 (BRT)
alert(d.toLocaleString()); // -> Sat Feb 28 23:45:26 2004
alert(d.toLocaleDateString()); // -> 02/28/2004
alert(d.toLocaleTimeString()); // -> 23:45:26