Max JavaScript date

maxDate.js

// Result: 0x1eb208c2dc0000 (Sat, 13 Sep 275760 00:00:00 GMT)
var time = 0;
var add = 0x10000;
for(;;) {
	var newTime = time + add;
	if(newTime == time) {
		alert("Looke like max integer: 0x" + time.toString(16));
		break;
	}
	var date = new Date(newTime);
	if(date.getTime()) {
		add = Math.floor(add*10);
	}
	else {
		if(add > 1) {
			add = Math.floor(add/2);
			if(add >= 1)
				continue;
		}
		alert("Max: 0x" + time.toString(16) + "\n" + new Date(time).toUTCString());
		break;
	}
	time = newTime;
}