(function($)
{
	
	$.fn.randomImage = function( config ) 
	{
		var settings = 
		{
			'dummy-key' : 'dummy-value'
		};     
		config = $.extend( settings, 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);