// Dependency: Fisher-Yates Array Shuffle
Array.prototype.shuffle = function () {
	var i, j, t;
	for (i=this.length-1; i>0; --i) {
		j = Math.floor(Math.random()*(i+1)); t = this[i]; this[i] = this[j]; this[j] = t;
	}
	return this;
};

function RandomPasswordGenerator () {
	var chars = "";
	for (var i=32; i<127; chars+=String.fromCharCode(i), ++i);
	chars = chars.split("");

	this.generate = function(nlength) {
		var n = (typeof nlength == "number" ? nlength : 12);
		var s = "";
		while (s.length<n) {
			chars.shuffle();
			s += chars[Math.random()*chars.length|0];
		}
		return s;
	};

	// returns array of random passwords
	this.generatePasswords = function(npasswords, nlength) {
		var l = (typeof nlength == "number" ? nlength : 12);
		var n = (typeof npasswords == "number" ? npasswords : 10);
		var p = []; for (var i=0; i<n; p.push(this.generate(l)), ++i);
		return p;
	};
}