(function($){
	$.randomImage = {
		defaults: {
			path: 'images/',
			myImages: ['callus_robert.png', 'callus_judy.png', 'callus_jeremy.png' ]
			
		}			
	}
	$.fn.extend({
			randomImage:function(config) {
				var config = $.extend({}, $.randomImage.defaults, config); 
				 return this.each(function() {
						var imageNames = config.myImages;
						//get size of array, randomize a number from this
						// use this number as the array index
						var imageNamesSize = imageNames.length;
						var lotteryNumber = Math.floor(Math.random()*imageNamesSize);
						var winnerImage = imageNames[lotteryNumber];
						var fullPath = config.path + winnerImage;
						//put this image into DOM at class of randomImage
						// alt tag will be image filename.
						$(this).attr( {
										src: fullPath,
										alt: winnerImage
									});
				});	
			}
	});
})(jQuery);

$(document).ready(function() {
	$('.shuffle').randomImage({path: 'images/'});
	$('a:first').click(function() {
		location.reload();
		return false;
	});
});