Notice: Undefined index:

[azrull]

Notice: Undefined index: go in C:\Program Files\Apache Software Foundation\Apache2.2\htdocs\fjb\includes\data.php on line 2

here the script :

<?php
$content = $_GET["go"];

switch($content) {

case 1:
include "content/corporate.info.php";
break;

case 2:
include "content/our.services.php";
break;

case 3:
include "content/latest.update.php";
break;

case 4:
include "content/contact.us.php";
break;

default:
include 'content/default.php';
}
?>

[Anyango]

<?php
error_reporting(E_ALL ^ E_NOTICE);

$content = $_GET["go"];

switch($content) {

case 1:
include "content/corporate.info.php";
break;

case 2:
include "content/our.services.php";
break;

case 3:
include "content/latest.update.php";
break;

case 4:
include "content/contact.us.php";
break;

default:
include 'content/default.php';
}
?>