(function($j) {

	$j.randombg = {
		defaults: {
			directory: "/skins/artdynasty/images/bg/",
			howmany: 2

		}
	}
    $j.fn.extend({
        randombg:function(config) {
            var config = $j.extend({}, $j.randombg.defaults, config);
			return this.each(function() {
		
				var directory = config.directory, howmany = config.howmany;

				var which = Math.floor(Math.random()*howmany)+1;
				$j(this).css({"background" : "url(" +directory + which + ".jpg) no-repeat top center"});
			  
            })
        }
    })
})(jQuery);