Internet Timestamp Generator for Google Calendar

This Internet Timestamp tool makes it possible for me to pull out data from within a specific range. It follows RF3339 Google Calendar Specifications:

/*
 Internet Timestamp Generator
 Copyright (c) 2009 Sebastiaan Deckers
 License: GNU General Public License version 3 or later

  Usage: Timestampe to RF3339 Google Calendar Spec
  Front Lobby!
*/
var Timestamp = {
	start: function (date){
		date = date ? date : new Date();
		var offset = date.getTimezoneOffset();
		return this.pad(date.getFullYear(), 4)
		+ "-" + this.pad(date.getMonth() + 1, 2)
		+ "-" + this.pad(date.getDate(), 2)
		+ "T" + this.pad(date.getHours(), 2)
		+ ":" + this.pad(date.getMinutes(), 2)
		+ ":" + this.pad(date.getSeconds(), 2)
		+ "." + this.pad(date.getMilliseconds(), 3)
		+ (offset > 0 ? "-" : "+")
		+ this.pad(Math.floor(Math.abs(offset) / 60), 2)
		+ ":" + this.pad(Math.abs(offset) % 60, 2);				
	},
	pad: function (amount, width ){
	  	var padding = "";
	  	while (padding.length < width - 1 && amount < Math.pow(10, width - padding.length - 1))
	   		padding += "0";
	  		return padding + amount.toString();
 		}
}