[EDIT]Foute weergave na includen van een bestand

<?php ob_start() ?>
<link href="test.css" rel="stylesheet" type="text/css">
<table width="900"  border="5" align="center" cellpadding="2" cellspacing="0" bordercolor="#4B4B4B">
  <tr>
    <td><img src="images/nieuwsadmin.jpg" width="900" height="100"></td>
  </tr>
  <tr>
    <td valign="middle">
	  <form action="" method="post" name="form1" class="text">
	    Login: <input name="login" type="text" class="textfield" id="login">
	    Paswoord: <input name="paswoord" type="password" class="textfield" id="paswoord">
        <input name="Submit" type="submit" class="textfield" value="Submit">
            </form>
	</td>
  </tr>
  <tr>
    <td>
		<? 
			if($_COOKIE["login"] == "1") {
			include ("addnews.php");
			}else{
			echo "U moet inloggen";
			}
		?>
	</td>
  </tr>
</table>
<?PHP
include_once("config_news.php");
if($_SERVER['REQUEST_METHOD'] == "POST")
{
$ilogin = $_POST['login'];
$ipaswoord = md5($_POST['paswoord']);
$res = mysql_query("SELECT * FROM gebruikers WHERE login='".$ilogin."'") or die(mysql_error());
if (mysql_num_rows ($res) != 0)
{
while ($assoc = mysql_fetch_assoc ($res))
{
if ($ipaswoord == $assoc['paswoord'])
{
setcookie(login, 1, $tijd_login);
header("Location: admin.php");
}
else
{
echo "<font=\"red\">Gegevens onjuist! Probeer opnieuw<font>";
}
}
}
}
?>

<?php ob_start() ?>
<link href="test.css" rel="stylesheet" type="text/css">
<table width="900"  border="5" align="center" cellpadding="2" cellspacing="0" bordercolor="#4B4B4B">
  <tr>
    <td><img src="images/nieuwsadmin.jpg" width="900" height="100"></td>
  </tr>
  <tr>
    <td valign="middle">
	  <form action="" method="post" name="form1" class="text">
	    Login: <input name="login" type="text" class="textfield" id="login">
	    Paswoord: <input name="paswoord" type="password" class="textfield" id="paswoord">
        <input name="Submit" type="submit" class="textfield" value="Submit">
            </form>
	</td>
  </tr>
  <tr>
    <td>
		<? 
			if($_COOKIE["login"] == "1") {
			include ("addnews.php");
			}else{
			echo "U moet inloggen";
			}
		?>
	</td>
  </tr>
</table>
<?PHP
include_once("config_news.php");
if($_SERVER['REQUEST_METHOD'] == "POST")
{
$ilogin = $_POST['login'];
$ipaswoord = md5($_POST['paswoord']);
$res = mysql_query("SELECT * FROM gebruikers WHERE login='".$ilogin."'") or die(mysql_error());
if (mysql_num_rows ($res) != 0)
{
while ($assoc = mysql_fetch_assoc ($res))
{
if ($ipaswoord == $assoc['paswoord'])
{
setcookie(login, 1, $tijd_login);
header("Location: admin.php");
}
else
{
echo "<font=\"red\">Gegevens onjuist! Probeer opnieuw<font>";
}
}
}
}
?>