PayPal Donate noch 1 Error

Guten Tag, ich wollte mal Fragen ob mir da noch einer helfen kann.
Ich baue mir gerade aus der Damned hp das komplette Paypal Donate ein und habe da noch ein Fehler.

Notice: Undefined index: page in C:\xampp\htdocs\admin\donlogs.php on line 5

Hier ist der komplette Code!

Quote:

<?php include('inc/header.php'); ?>
<h1>Management - Paypal Donation Logs</h1>
<?php
echo '<div id="pageinc">';
$page = $_GET['page'];
if(!isset($page)) { $page = 1; }
$perpage = 20;
$start = $page * $perpage - $perpage;
$select = mysql_query('SELECT * FROM `'.TABLE_PREFIX.'donationlogs` ORDER BY `datetime` DESC LIMIT '.$start.', '.$perpage);
$all = mysql_query('SELECT * FROM `'.TABLE_PREFIX.'donationlogs`');
$count = mysql_num_rows($all);
$countpages = $count / $perpage;
echo '<table id="table" style="width: 100%;">
<tr>
<td id="key">Account</td>
<td id="key">E-Mail</td>
<td id="key">Transaction ID</td>
<td id="key"><table align="center"><tr><td><img src="img/price.png" /></td><td>Worth</td></tr></table></td>
<td id="key" style="text-align: center;"><table align="center"><tr><td><img src="img/date.png" /></td><td>Date/Time</td></tr></table></td>
</tr>';
while($result = mysql_fetch_array($select)) {
$username = mysql_query('SELECT `username` FROM `'.TABLE_PREFIX.'users` WHERE `uid`=\''.$result['uid'].'\'');
echo '<tr id="dlid_'.$result['dlid'].'" class="row">
<td id="value">'.mysql_result($username, 0, 'username').'</td>
<td id="value">'.$result['email'].'</td>
<td id="value">'.$result['txn_id'].'</td>
<td id="value" style="text-align: center;">'.$result['worth'].' €</td>
<td id="value" style="text-align: center;">'.date('Y/m/d H:i', strtotime($result['datetime'])).'</td>
</tr>';
}
echo '</table><br/>';
for($i=0; $i < $countpages; $i++) {
$k = $i + 1;
if($page == $k) {
echo '<span id="page"><b>'.$k.'</b></span>';
} else {
echo '<span id="page"><a href="javascript:donationPage('.$k.');">'.$k.'</a></span>';
}
}
echo '</div><br/>';
?>
<?php include('inc/footer.php'); ?>