<ul id="menu">
<li><a href="#" title="Anasayfa" class="active">Anasayfa</a></li>
<li><a href="#" title="Hakkımızda">Hakkımızda</a></li>
<li><a href="#" title="Ürünlerimiz">Ürünlerimiz</a></li>
<li><a href="#" title="İletişim">İletişim</a></li>
</ul>
</div>

css:

#menu {
	background: #333;
	float: left;
	list-style: none;
	margin: 0;
	padding: 0;
	width: 100%;
}
#menu li {
	float: left;
	font: 67.5% "Lucida Sans Unicode", "Bitstream Vera Sans", "Trebuchet Unicode MS", "Lucida Grande", Verdana, Helvetica, sans-serif;
	margin: 0;
	padding: 0;
}
#menu a {
	background: #333 url("images/seperator.gif") bottom right no-repeat;
	color: #ccc;
	display: block;
	float: left;
	margin: 0;
	padding: 8px 12px;
	text-decoration: none;
}
#menu a:hover, #menu a.active {
	background: #da251c url("images/hover.png") bottom center no-repeat;
	color: #fff;