Eigenes Modul nicht im Menü

<?php


if (preg_match("/serverinfo.php/i", $_SERVER['PHP_SELF'])) { 
    Header("Location: ../index.php");
	die();}


if(is_admin($admin)) {


function get_infos() {
    include ("admin/header.php");
	$adminmsg = admin_title("cmodules", ""._serverinfo."", ""._ASSISTENTAPPLIST."", $iconset, "");
	echo ''.$adminmsg.'';


if(!$_POST['lookup_information'])
{	
?>
<form method="post" action="admin.php?op=serverinfo">
<label for="remote_location">IP oder Domain: <input type="text" id="remote_location" name="remote_location"> </label>
<br/>
<input name="lookup_information" type="submit"  value="Informationen Anzeigen"  id="lookup_information"  class="submit_button"/>
</form>
<?php
}


elseif($_POST['lookup_information'])
{
$remote_location = "https://" . $_POST['remote_location'] . "/serverinfo.php";
echo "<iframe src=" . $remote_location . " width='1710px' height='860' scrolling='no' border:none;/>";
}


else
{ echo "Es ist ein Fehler aufgetreten"; }	
    include ("admin/footer.php");}


switch ($op) {
	case "get_infos":
	get_infos();
	break;}}
else{adminLogin($admin);}


?>