Static Date methods for formatting js Date objects to strings

Date.to.js

/*
	Module Date.to - Static Date methods for formatting js Date objects to strings.
	@author	John Hunter
	created	2010-03-30
	
	use: Date.to.ddmmyyyy(new Date(), '^') => '30^03^2010'
	
*/

Date.to = (function () {
	
	function ddmmyyyy (d, sp) {
		if (d.constructor !== Date) return d;
		return toShort(sp || '/', d.getDate(), d.getMonth()+1, d.getFullYear());
	}
	
	function hhmmss (d, sp) {
		if (d.constructor !== Date) return d;
		return toShort(sp || ':', d.getHours(), d.getMinutes(), d.getSeconds());
	}
	
	function toShort () {
		var args = Array.prototype.slice.call(arguments),
			sp = args.shift(),
			i = args.length;
			
		while(i--) args[i] = pack(args[i]);
		return args.join(sp);
	}
	
	function pack (n) { return (n < 10)? '0' + n : n; }
	
	return {
		ddmmyyy: ddmmyyy, hhmmss: hhmmss
	};
	
}());