jQuery "Konami" Code

(function($) {

	$.fn.konami = function(callback, code) {
		if(code == undefined) code = "38,38,40,40,37,39,37,39,66,65";
		var kkeys=new Array();
		return this.each(function() {
			$(this).keydown(function(e){
				kkeys.push( e.keyCode );
				if ( kkeys.toString().indexOf( code ) >= 0 ){
					$(this).unbind('keydown', arguments.callee);
					callback(e);
				}
			}, true);
		});
	}

})(jQuery);