Change menu-image

ul.nav {
list-style: none;
border-top: 0px solid #666;
margin-bottom: 15px;
color:#CC66CC;
}

ul.nav li {
border-bottom: 0px solid #666;
        background-image: url(images/menu-bg.jpg);
        color:#CC66CC;
}

ul.nav a, ul.nav a:visited
padding: 5px 5px 5px 15px;
display: block;
width: 160px;
text-decoration: none;
color:#CC66CC;
}

ul.nav a:hover, ul.nav a:active, ul.nav a:focus
background-image: url(images/menu-bg-1.jpg);
color: #FFF;
}


--> menu-bg.jpg

--> menu-bg-1.jpg