Stuff

<!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>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Untitled Document</title>

<style type="text/css">

#popout1
{
	position: absolute; 
	left: 0px; 
	top: 100px; 
	width: 20px;
	height: 200px; 
	background-color: #999999;
}

#popout1 #popout_content
{
	display: none;
}

#popout1:hover
{
	width: 100px;
}

#popout1:hover #popout_content
{
	display: block;
}

</style>

</head>

<body>

<div id="popout1">
	<div id="popout_content">
		Some pop out content
	</div>
</div>

</body>
</html>