(function($) {

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

})(jQuery);