<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<div id="navbar">
<nav class="navbar navbar-default navbar-static-top" role="navigation">
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#navbar-collapse-1">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="#">Brand</a>
</div>
<div class="collapse navbar-collapse" id="navbar-collapse-1">
<ul class="nav navbar-nav">
<li class="active"><a href="#">Active Link</a></li>
<li><a href="#">Link</a></li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">Dropdown <b class="caret"></b></a>
<ul class="dropdown-menu">
<li class="kopie"><a href="#">Dropdown</a></li>
<li><a href="#">Dropdown Link 1</a></li>
<li class="active"><a href="#">Dropdown Link 2</a></li>
<li><a href="#">Dropdown Link 3</a></li>
<li class="dropdown dropdown-submenu"><a href="#" class="dropdown-toggle" data-toggle="dropdown">Dropdown Link 4</a>
<ul class="dropdown-menu">
<li class="kopie"><a href="#">Dropdown Link 4</a></li>
<li><a href="#">Dropdown Submenu Link 4.1</a></li>
<li><a href="#">Dropdown Submenu Link 4.2</a></li>
<li><a href="#">Dropdown Submenu Link 4.3</a></li>