/*
defaults:{path:'http://www.fafp.org/images/gen/random/hbg/',
	ele:'img',   //img or background
	myImg:['h_bg_blue.jpg','h_bg_green.jpg','h_bg_red.jpg']}
*/
(function($){$.randomE = {defaults:{path:'http://www.fafp.org/images/gen/random/hbg/',ele:'img',myImg:['h_bg_blue.jpg','h_bg_green.jpg','h_bg_red.jpg']}}
$.fn.extend({randomE:function(config){var config = $.extend({}, $.randomE.defaults, config); 
return this.each(function(){var imageNames = config.myImg;var imageNamesSize = imageNames.length;var lotteryNumber = Math.floor(Math.random()*imageNamesSize);
var winnerImage = imageNames[lotteryNumber];var fullPath = config.path + winnerImage;var bele = config.ele;
if (bele === 'img'){$(this).attr({src:fullPath});}
if (bele === 'background'){var imgurl = 'url(' + fullPath + ')';$(this).css('background-image',imgurl);}
});}});
})(jQuery);