(function(jQuery) {
    var konamiListeners = [];

    var kode = [38, 38, 40, 40, 37, 39, 37, 39, 66, 65];
    var progress = 0;

    jQuery.extend({
        konami: function(listener, sequence) {
            konamiListeners.push(listener);

            if (sequence) kode = sequence;
        }
    });

    jQuery(document)
		.bind("keyup", function(event) {
		    var c = event.keyCode;

		    if (c == kode[progress])
		        progress++;
		    else
		        progress = c == kode[0] ? 1 : 0;

		    if (progress == kode.length) {
		        if (konamiListeners.length > 0) {
		            jQuery.each(konamiListeners, function(item) {
		                this();
		            });
		        }
		    }
		});
})(jQuery);