Array shuffling method

arrayShuffle.js

Array.prototype.shuffle = function shuffle(){
  var tempSlot;
  var randomNumber;
  for (var i = 0; i != this.length; i++){
		randomNumber = Math.floor(Math.random() * this.length);
		tempSlot = this[i];
		this[i] = this[randomNumber];
		this[randomNumber] = tempSlot;	
		}
	return this;
};