menu jquery problem

[izzusan]

allora il mio slider è composto da un elenco puntato

    <div id="wrap">

        <section id="sec_banners" class="section">
        <ul>
     
            <li id="1" class="banner">
            
            
            <h2 class="banner_txt">Desarrollamos proyectos web, 
dise&ntilde;o gr&aacute;fico y multimedia.</h2>
            [img]src/img/homepage_slide/00.jpg[/img]
            
         
            <li class="banner">

            <a href="http://www.facebook.com/creativeblacktie"><h2 class="banner_txt">d dd fdsgdf g 
<span style="color:#3B5998">Facebook </span>page, click here!</h2></a>
            [url="http://www.facebook.com/creativeblacktie"][img]src/img/homepage_slide/01.jpg[/img][/url]
        
         
            <li class="banner">
            <h2 class="banner_txt">Creative Blacktie leaves room for 
trendy interpretations of formal wear</h2>
            [img]src/img/homepage_slide/02.jpg[/img]
        
         
            <li class="banner">
            <h2 class="banner_txt">We enjoy listening to Shotgun 
Jimmie during our working day</h2>
            [img]src/img/homepage_slide/03.jpg[/img]
        
        [/list]
</section> 

cambia ogni 3 secondi

ho trovato uno script per cambiare il colore di sfondo con un'animazione

    <script type="text/javascript">
                
        $('#menu1').animate({backgroundColor: '#400101'})
                    
    </script> 

menu1 è il div del mio menu.

ora come faccio a fargli cambiare colore ogni 3 secondo??