ye ye , he dicho un poco de codigo , jeje, mira segun lo que entiendo es que tenes que añadir un item a la seccion de menu.
en el codigo de abajo lo hice añadiendo el item 1 al final de todos los items    
Código HTML:
Ver original<!DOCTYPE html>
        <title>Restaurant Website and Gallery Template with jQuery and Google Maps
</title>         <meta name="description" content="Restaurant Website and Gallery Template with jQuery and Google Maps" />         <meta name="keywords" content="jquery, gallery, images, css3, html5, photography, website, template, google maps, sliding, background"/>         <link rel="shortcut icon" href="http://tympanus.net/favicon.ico" type="image/x-icon"/>         <link rel="stylesheet" type="text/css" href="http://tympanus.net/Development/RestaurantTemplate/css/style.css" />         <link href='http://fonts.googleapis.com/css?family=PT+Sans+Narrow' rel='stylesheet' type='text/css' />         <link href='http://fonts.googleapis.com/css?family=Terminal+Dosis+Light' rel='stylesheet' type='text/css'>         <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.5.2/jquery.min.js"></script>         <script src="http://maps.google.com/maps/api/js?sensor=true" type="text/javascript"></script>  
            
        <div id="bf_container" class="bf_container">             <div id="bf_background" class="bf_background">                 <img src="http://tympanus.net/Development/RestaurantTemplate/images/background/default.jpg" alt="image1" style="display:none;"/>                 <div class="bf_overlay"></div>             <div id="bf_page_menu" class="bf_menu" >                 <h1 class="title">Vittori's
<span>trattoria italiana
</span></h1>             <div class="bf_page" id="home" style="display:block;">                 <div class="bf_content_text">                     <p>When she reached the first hills of the Italic Mountains, she had a last view back on the skyline of her hometown Bookmarksgrove, the headline of Alphabet Village and the subline of her own road, the Line Lane. Pityful a rethoric question ran over her cheek, then she continued her way.
</p>             <div class="bf_page" id="about">                 <div class="bf_content_text">                     <p>It is a paradisematic country, in which roasted parts of sentences fly into your mouth.
</p>                     <p>Even the all-powerful Pointing has no control about the blind texts it is an almost unorthographic life One day however a small line of blind text by the name of Lorem Ipsum decided to leave for the far World of Grammar.
</p>             <div class="bf_page" id="menu">                 <div class="bf_content_text">                     <p>Drops of rain could be heard hitting the pane, which made him feel quite sad.
</p>                         <li><a href="#"><img src="http://tympanus.net/Development/RestaurantTemplate/images/thumbs/1.jpg" alt="thumb1"/></a></li>                         <li><a href="#"><img src="http://tympanus.net/Development/RestaurantTemplate/images/thumbs/2.jpg" alt="thumb2"/></a></li>                         <li><a href="#"><img src="http://tympanus.net/Development/RestaurantTemplate/images/thumbs/3.jpg" alt="thumb3"/></a></li>                         <li><a href="#"><img src="http://tympanus.net/Development/RestaurantTemplate/images/thumbs/4.jpg" alt="thumb4"/></a></li>                         <li><a href="#"><img src="http://tympanus.net/Development/RestaurantTemplate/images/thumbs/5.jpg" alt="thumb5"/></a></li>                         <li><a href="#"><img src="http://tympanus.net/Development/RestaurantTemplate/images/thumbs/6.jpg" alt="thumb6"/></a></li>                         <li><a href="#"><img src="http://tympanus.net/Development/RestaurantTemplate/images/thumbs/1.jpg" alt="thumb6"/></a></li>                 <div id="bf_gallery" class="bf_gallery">                     <a id="bf_close" href="#" class="bf_close"></a>                         <a id="bf_prev" href="#" class="bf_prev"></a>                         <a id="bf_next" href="#" class="bf_next"></a>                     <div class="bf_gallery_wrapper">                         <div class="bf_gallery_item">                             <div class="bf_heading"><h2>Pizza Rustica
</h2></div>                                 <p>Fresh ingredients and authentic flavours
</p>                             <img src="http://tympanus.net/Development/RestaurantTemplate/images/foreground/1.jpg" alt="image1" data-bgimg="http://tympanus.net/Development/RestaurantTemplate/images/background/1.jpg" />                         <div class="bf_gallery_item">                             <div class="bf_heading"><h2>Pizza Quattro Stagioni
</h2></div>                                 <p>Originality meets tradition
</p>                             <img src="http://tympanus.net/Development/RestaurantTemplate/images/foreground/2.jpg" alt="image1" data-bgimg="http://tympanus.net/Development/RestaurantTemplate/images/background/2.jpg" />                         <div class="bf_gallery_item">                                 <p>Dive into the balance of taste
</p>                             <img src="http://tympanus.net/Development/RestaurantTemplate/images/foreground/3.jpg" alt="image1" data-bgimg="http://tympanus.net/Development/RestaurantTemplate/images/background/3.jpg" />                         <div class="bf_gallery_item">                             <div class="bf_heading"><h2>Salsicce Boscaiola
</h2></div>                                 <p>The right intensity
</p>                             <img src="http://tympanus.net/Development/RestaurantTemplate/images/foreground/4.jpg" alt="image1" data-bgimg="http://tympanus.net/Development/RestaurantTemplate/images/background/4.jpg" />                         <div class="bf_gallery_item">                             <div class="bf_heading"><h2>Tortelloni Alla Zucca
</h2></div>                                 <p>Incredibly tasty perfection
</p>                             <img src="http://tympanus.net/Development/RestaurantTemplate/images/foreground/5.jpg" alt="image1" data-bgimg="http://tympanus.net/Development/RestaurantTemplate/images/background/5.jpg" />                         <div class="bf_gallery_item">                             <div class="bf_heading"><h2>Calamaretti Fritti
</h2></div>                                 <p>Combine chunky and soft
</p>                             <img src="http://tympanus.net/Development/RestaurantTemplate/images/foreground/6.jpg" alt="image1" data-bgimg="http://tympanus.net/Development/RestaurantTemplate/images/background/6.jpg" />                         <div class="bf_gallery_item">                             <div class="bf_heading"><h2>ITEM AÑADIDO
</h2></div>                             <img src="http://tympanus.net/Development/RestaurantTemplate/images/foreground/1.jpg" alt="image1" data-bgimg="http://tympanus.net/Development/RestaurantTemplate/images/background/6.jpg" />             <div class="bf_page" id="visit">                 
            <a class="bf_left" href="http://tympanus.net/Development/CircularDiscographyTemplate/"><span>« Previous Demo:
</span> Circular Discography Template with jQuery
</a>             <a href="http://tympanus.net/codrops/2011/04/21/restaurant-template/"><strong>back to the Codrops tutorial
</strong></a>             <a href="http://www.flickr.com/photos/krossbow/" target="_blank">and krossbow
</a>             <a href="http://www.flickr.com/people/avlxyz/" target="_blank">Photography by avlxyz
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        <!-- the mousewheel plugin - optional to provide mousewheel support -->
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