Code Snippet

Shuffle Array

Technique #1

function Shuffle(o) {
	for(var j, x, i = o.length; i; j = parseInt(Math.random() * i), x = o[--i], o[i] = o[j], o[j] = x);
	return o;
};

Usage

var testArray = [1,2,3,4,5];
Shuffle(testArray);

// jQuery to dump out new values to element with ID of 'dump'
$(function() {
   for (var i=0;i<testArray.length;i++) {
      $("#dump").append(testArray[i]);
   }
});

Technique #2

yourArray.sort(function() { return 0.5 - Math.random() });