CSS menu extend

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Horizontal Drop Down Menus</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<style type="text/css">
@import "styles.css";
</style>
</head>
<body> 
<ul> 
  <li><a href="#">Home</a></li> 
  <li><a href="#">About</a> 
    <ul> 
      <li><a href="#">History</a></li> 
      <li><a href="#">Team</a></li> 
      <li><a href="#">Offices</a></li> 
    </ul> 
  </li> 
  <li><a href="#">Services</a> 
    <ul> 
      <li><a href="#">Web Design</a></li> 
      <li><a href="#">Internet Marketing</a></li> 
      <li><a href="#">Hosting</a></li> 
      <li><a href="#">Domain Names</a></li> 
      <li><a href="#">Broadband</a></li> 
    </ul> 
  </li> 
  <li><a href="#">Contact Us</a> 
    <ul> 
      <li><a href="#">United Kingdom</a></li> 
      <li><a href="#">France</a></li> 
      <li><a href="#">USA</a></li> 
      <li><a href="#">Australia</a></li> 
    </ul> 
  </li> 

</ul> 
</body>
</html>
body {
	font: normal 11px verdana;
	}

ul {
	margin: 0;
	padding: 0;
	list-style: none;
	width: 150px; /* Width of Menu Items */
	border-bottom: 1px solid #ccc;
	}

ul li {
	position: relative;
	}
	
li ul {
	position: absolute;
	left: 149px; /* Set 1px less than menu width */
	top: 0;
	display: none;
	}

/* Styles for Menu Items */
ul li a {
	display: block;
	text-decoration: none;
	color: #777;
	background: #fff;
	padding: 5px;
	border: 1px solid #ccc; /* IE6 Bug */
	border-bottom: 0;
	}

/* Fix IE. Hide from IE Mac \*/
* html ul li { float: left; height: 1%; }
* html ul li a { height: 1%; }
/* End */
		
li:hover ul { display: block; } /*  The magic */