Button Doesn´t appear

rikalopes

I manage to get all the buttons working except the logout button, can you guys help me?

Thank in advance.

Code from the main page:

<?php
Session_start();
?>
<html>

<head>
<script language="JavaScript">
function testapass_aluno()
{
if(regaluno.password.value!=regaluno.password2.value)
{
alert("erro: Passwords diferentes.");
regaluno.password2.value="";
document.regaluno.password2.focus();
}
}
function testapass_prof()
{
    alert("Pass Prof");
	if(regprof.password.value!=regprof.password2.value)
	{
		alert("erro: Passwords diferentes.");
		regprof.password2.value="";
		document.regprof.password2.focus();
	}
}
</script>

<title>Biblioteca </title>
<meta name="description" content="website description" />
<meta name="keywords" content="website keywords, website keywords" />
<meta http-equiv="content-type" content="text/html; charset=windows-1252" />
<meta http-equiv="robots" content="noindex,nofollow" />
<link rel="stylesheet" type="text/css" href="style/style.css" />
</head>

<body>
<div id="fb-root"></div>
<script>(function(d, s, id) {
var js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id)) return;
js = d.createElement(s); js.id = id;
js.src = "//connect.facebook.net/pt_PT/all.js#xfbml=1";
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));</script>

<div id="main">
<div id="header">
<div id="logo">
<div id="logo_text">

<h1><a href="index.php">Biblioteca<span class="logo_colour"></span></a></h1>
<h2>Escola Secundária António Nobre</h2>
</div>
</div>
<div id="menubar">
<ul id="menu">
      
      <li class="selected"><a href="index.php">Login/Registo</a></li>
      <li><a href="examples.php">Area de utilizador</a></li>
      <li><a href="page.php">Requisicao de material</a></li>
	  <li><a href="another_page.php">Administrador</a></li>
      <li><a href="contact.php">Contactos</a></li>
	  [B]<li><a HREF ="logout2.php">Log out</a></li>[/B]
    </ul>
  </div>

</div>

And here is the code from the button that i want to appear:

<?php

#include("header.html");

session_start();
session_destroy();

?>

Damian_

when you say doesn't appear do you mean, the word "Log Out" is not on your page?

so when you log out you want the session to be destroyed?