semantic-ui dropdown menu do not work
I have been trying to build a menu using Semantic-UI. I can't get the dropdown menus to work at all. I took a copy of the page Menu examples and pulled out everything except the tiered menu and placed it in a separate file. Only the dropdown menu will not function, though there are no errors. Can anyone tell me what I have missed?
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="Content-Script-Type" content="text/jscript" />
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />
<link rel="stylesheet" type="text/css" class="ui" href="http://semantic-ui.com/build/packaged/css/semantic.min.css">
<link rel="stylesheet" type="text/css" href="http://semantic-ui.com/stylesheets/semantic.css">
<script src="http://semantic-ui.com/javascript/library/jquery.min.js"></script>
<script src="http://semantic-ui.com/javascript/library/history.js"></script>
<script src="http://semantic-ui.com/javascript/library/easing.js"></script>
<script src="http://semantic-ui.com/javascript/library/ace/ace.js"></script>
<script src="http://semantic-ui.com/javascript/library/tablesort.js"></script>
<script src="http://semantic-ui.com/javascript/library/waypoints.js"></script>
<script src="http://semantic-ui.com/build/packaged/javascript/semantic.min.js"></script>
<script src="http://semantic-ui.com/javascript/semantic.js"></script>
</head>
<body class="menu" >
<div class="ui tiered menu">
<div class="menu">
<a class="active item">
<i class="users icon"></i>
Friends
</a>
<a class="item">
<i class="grid layout icon"></i> Browse
</a>
<a class="item">
<i class="mail icon"></i> Messages
</a>
<div class="right menu">
<div class="item">
<div class="ui icon input">
<input type="text" placeholder="Search...">
<i class="search icon"></i>
</div>
</div>
<div class="ui dropdown item">
More <i class="icon dropdown"></i>
<div class="menu">
<a class="item"><i class="edit icon"></i> Edit Profile</a>
<a class="item"><i class="globe icon"></i> Choose Language</a>
<a class="item"><i class="settings icon"></i> Account Settings</a>
</div>
</div>
</div>
</div>
<div class="ui sub menu">
<a class="active item">Search</a>
<a class="item">Add</a>
<a class="item">Remove</a>
</div>
</div>
</body>
</html>
