admin_topnav.php

   <nav class="navbar navbar-inverse 	 navbar-fixed-top" role="navigation">
        <div class="container">
            <div class="navbar-header">
                <a class="navbar-brand">Online Blood Bank Management System</a>
            </div>
            <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
                <ul class="nav navbar-nav navbar-right">
                     <li><a href="admin_inbox.php">Dashboard</a></li>
                     <li><a href="admin_logout.php"> Logout</a></li>
                </ul>
            </div>
        </div>
    </nav>