Array.prototype.shuffle = function()
{
	var i = this.length;
	while(i){
		var j = Math.floor( Math.random() * i );
		var t = this[--i];
		this[i] = this[j];
		this[j] = t;
	}

	return this;
}
function zeroPad( n )
{
	return ( n < 10 ) ? '0'+ n : n;
}