<link href="//netdna.bootstrapcdn.com/bootstrap/3.1.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.1.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<div class="navbar navbar-default navbar-static-top" role="navigation">
<div class="container-fluid">
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="<?php echo site_url('web');?>">Tukar Buku</a>
</div>
<div class="navbar-collapse collapse">
<ul class="nav navbar-nav">
<li><a href="<?php echo site_url('web');?>"><i class="glyphicon glyphicon-home"></i> Home</a></li>
<li><a href="<?php echo site_url('web/howtoswap');?>">How to Swap Books</a></li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">Top 100 <b class="caret"></b></a>
<ul class="dropdown-menu" role="menu">
<li><a href="#">Top 100 Wishlisted Books</a></li>
<li><a href="#">Top 100 Posted Books</a></li>
<li><a href="#">Top 100 Swappers</a></li>
<li class="divider"></li>
</ul>
</li>
<li><a href="<?php echo site_url('web/contactus');?>">Contact us</a></li>
</ul>
<ul class="nav navbar-nav navbar-right">
<li><a href="<?php echo site_url('web/register');?>">Sign Up</a></li>
<li class="dropdown">
<a class="dropdown-toggle" data-toggle="dropdown">Sign in <b class="caret"></b></a>
