HTML
<div id="Navigation">
<ul id="nav">
<li id="active"><a href="#">Item number 1</a></li>
<li><a href="#">Item number 2</a></li>
<li><a href="#">Item number 3</a></li>
<li><a href="#">Item number 4</a></li>
<li><a href="#">Item number 5</a></li>
</ul>
</div>

CSS
#Navigation
{
width: 300px;
margin-left: 30px;
padding: 10px;
font-family: "Tahoma", "MS UI Gothic","OSAKA";
font-size: 13px;
text-align: center;
text-transform: lowercase;
background: #f0e7d7;
}

#Navigation ul
{
list-style-type: none;
padding: 0;
margin: 0;
}

#nav li
{
display: block;
margin: 0;
padding: 0;
}

#nav li a
{
display: block;
width: 100%;
padding: 0.5em 0;
border-width: 1px;
border-color: #ffe #aaab9c #ccc #fff;
border-style: solid;
color: #777;
text-decoration: none;
background: #f7f2ea;
}

#nav #active a
{
background: #f0e7d7;
color: #800000;
}

#nav li a:hover, #active a:hover
{
color: #800000;
background: transparent;
border-color: #aaab9c #fff #fff #ccc;
}